1. Adorno, T. W., Frenkel-Brunswick, E., Levinson, D., & Sanford, D. (1950). The Authoritarian Personality. New York: Harper.
2. Akhtar, M. (2012). Positive Psychology for Overcoming Depression. London: Watkins Publishing.
3. Bodhi, B. (2011). What Does Mindfulness Really Mean? A Canonical Perspective. Contemporary Buddhism, 12(1), 19–38.
4. Brentano, F. (1973). Psychology from an Empirical Standpoint. London: Routledge.
5. Bryant, F. W., & Veroff, J. (2007). Savoring: A New Model of Positive Experience. Mahwah, NJ: Lawrence Erlbaum Associates.