1. Adler, A. (1980). What life should mean to you. George Allen and Unwin.
2. Baumeister, R. F. (1991). Meanings of life. Guilford.
3. Berdyaev, N. (1931a). O samoubiistve [On Suicide]. Psikhologicheskii zhurnal, 13(1), 90–94 (Reprinted from: O samoubiistve: psikhologicheskii etud [On suicide: Psychological etude]. Paris: YMCA-Press (Impr. de Navarre)).
4. Berdyaev, N. (1931b). O naznachenii cheloveka [On human destination]. Moscow: Respublika. (Reprinted from: Opyt paradoksal’noy etiki [The Experience of Paradoxical Ethics]. Paris: YMCA-Press).
5. Brown, K. W., & Ryan, R. M. (2003). The benefits of being present: Mindfulness and its role in psychological well-being. Journal of Personality and Social Psychology, 84(4), 822–848.