Admasu, S., Vagrecha, Y., & Endalew, M. (2015). Effectiveness of existential group therapy for treatment of psychological problem of cervical cancer patients. Innovare Journal of Social Sciences, 2(1): 5-9.
American Psychiatric Association (2013). Diagnostic and statistical Manual of Mental Disorders (Fifth Edition) DSM-5. Translated by: Seyed Mohammadi, Y. (1393). Tehran: Ravan publication. (Persian)
Bartz JD. (2009). Theistic existential psychotherapy. Psychology of Religion and Spirituality.1:69-80.
Cohen, R.; Bavishi, C.; Rozanski, A. (2016). Purpose in life and its relationship to all-cause mortality and cardiovascular events: A meta-analysis. Psychosom, 78, 122–133.
Cheraghi, M, Oreyzi, H.R and Farahani, H. (2009). Reliability, Validity, Factor Analysis and Normalization of Crumbaugh and Maholick's Questionnaire of Purpose in the Life. Journal of Psychology, 12(4), 396-413. (Persian)
Ghaffari, A., Behroozifar, J. and Narouee, P. (2010). The Effect of existential group therapy on Individual Recognition and Strive for Personal Growth. The Fifth Student Mental Health Seminar, Tehran, Iran.
Julom, A. M., Guzmán, R. d. (2013). The Effectiveness of Logotherapy Program in Alleviating the Sense of Meaninglessness of Paralyzed In-patients. International Journal of Psychology & Psychological Therapy. 13(3), 357-371.
Keyes, C. L. M. (2011). Authentic purpose: The spiritual infrastructure of life. Journal ofManagement, Spirituality & Religion, 8(4), 281–297.
Khajeh Mougehy, N. (1993). Preliminary Preparation of the Persian Form of Millon Clinical Multiaxial Inventory - II in Tehran. Tehran Psychiatric Institute. Master's thesis, (Not printed). (Persian)
Khodadadi Sangdeh, J., Etemadi, A., Alavi Kamoosi, E. (2015). The Effectiveness of Existential Group Psychotherapy on Student’s mental health. Journal of Cognitive and Behavioral Sciences, 4(2), 119-130. (Persian)
Kim, E.S.; Hershner, S.D.; Strecher, V.J. (2015). Purpose in life and incidence of sleep disturbances. J. Behav., 38, 590–597.
Kelinke, C.L. (2002). Coping with Life challenges. Translated by: Mohammad Khani, Sh. (1390). Tehran: Rasaneh Takhasosi. (Persian)
Koenig, H. G. (2004). Spirituality, wellness, and quality of life. Sexuality, Reproduction and Menopause, 2, 76-82.
Loostra, B., Brouwers, A., & Tomic, W. (2009). Feelings of existential fulfilment and burnout among secondary school teachers. Teaching and Teacher Education, 25(5), 752-757.
Marnat, G.G. (2009). Handbook of Psychological assessment. Translated by: Pasha Sharifi, H. and Nikkhoo, M.R. (1394). Tehran: Sokhan Publications. (Persian)
Marsh, A., Smith, L., Piek, J. and Saunders, B. (2003). The Purpose in Life: psychometric properties for social drinkers and drinkers in alcohol treatment. Educational and Psychological Measurement, 63(5), 859–871.
McKnight, P. E., & Kashdan, T. B. (2009). Purpose in life as a system that creates and sustains health and well-being: An integrative, testable theory. Review of General Psychology, 13(3), 242–251.
Molcar, C. C. and Stuempfig, D. W. (2001). Effects of world view on purpose in life. Journal of Psychology, 122, 365–371.
Murdere, M., Saks, K, (2006).The impact of negative affectivity on quality of life and relationship fulfillment in Estonia. Journal of Research in Personality. 39(3): 336-353.
Navabi nejad, SH. (2013). Group guidance and counseling. Tehran: Samt. (Persian)
Plahuta, J. M., McCulloch, B. J., Kasarskis, E. J., Ross, M. A., Walter, R. A., and McDonald, E. R. (2002). Amyotrophic lateral sclerosis and hopelessness: psychosocial factors. Social Science and Medicine, 55(12), 2131–2140.
Pinquart, M. (2002). Creating and maintaining purpose in life in old age: A meta-analysis. Ageing Int, 27, 90–114.
Pietrzak, R.H.; Cook, J.M. (2013). Psychological resilience in older U.S. veterans: Results from the national health and resilience in veterans study. Depress. Anxiety 2013, 30, 432–443.
Sarason IG. (1984). Stress, anxiety, and cognitive interference: Reactions to tests. Journal ofPersonality and Social Psychology; 46:929-38.
Schaefer, S.M.; Morozink, B.J.; van Reekum, C.M.; Lapate, R.C.; Norris, C.J.; Ryff, C.D.; Davidson, R.J. (2013). Purpose in life predicts better emotional recovery from negative stimuli. PLoS ONE, 8, 803-29.
Seligman, M.E.P., Csikszentmihalyi, M. (2000). "Positive Psychology: An Introduction". American Psychologist, 55 (1):5 –14.
Sharifi, A.A., Maulavi, H. and Namdari, K. (2007). Diagnostic validity of Millon Clinical Multiaxial Inventory. Knowledge and Research in Psychology, (34): 38-27. (Persian)
Wells, J. N., Bush, H. A. and Marshall, D. (2002).Purpose-in-life and breast health behavior in Hispanic and Anglo women,” Journal of Holistic Nursing, 20(3), 232–249.
Westman B, Bergenmar M, Andersson L. (2006). Life, Illness and Death-Existential Reflections of a Swedish Sample of Patients who have Undergone Curative Treatment for Breast or Prostatic Cancer. European Journalof Oncology Nursing.10 (3): 169-176.
Yalom, I.D. (1980). Existential Psychotherapy. Translated by: Habib, S. (1391). Tehran: Ney Publication. (Persian)
Yalom, I.D. and Leszcz, M. (1980). The Theory and Practice of Group Psychotherapy. Translated by: Yassaie. M. (1394). Tehran: Danjeh Pub. (Persian)
Yu, L.; Boyle, P.A.; Wilson, R.S.; Levine, S.R.; Schneider, J.A.; Bennett, D.A. (2015). Purpose in life and cerebral infarcts in community-dwelling older people. Stroke 2015, 46, 1071–1076.