1. Batthyany, A. (2011). Over thirty‐five years later: Research in logotherapy since 1975. In V. Frankl (Ed.), Man’s search for ultimate meaning (pp. 169–188). London: Rider.
2. Batthyany, A., & Guttmann, D. (2005). Empirical
research in logotherapy and meaning-oriented psychotherapy. Phoenix: Zeig, Tucker & Theisen.
3. Baumeister, R. F. (1991). Meanings of life. New York: Guilford.
4. Baumeister, R. F., & Vohs, K. D. (2002). The pursuit of meaningfulness in life. In C. R. Snyder & S. J. Lopez (Eds.), Handbook of positive psychology (pp. 608–628). New York: Oxford University Press.
5. Becker, E. (1975). Escape from evil. New York: Free Press.