Bonebright, C.A., Clay, D.L., & Ankenmann, R.D. 2000. The relationship of workaholism with work–life conflict, life satisfaction, and purpose in life. Journal of Counseling Psychology. 47: 469–477.
Colby, A. 2010. Emotional well being. http://www.annettecolby.com/emotional_well_being.shtml [23 Jun 2010].
Bauer, J. 2007. Book review. The Journal of Positive Psychology. 2(1): 76-78.
Debats, D.L., van der Lubbe, P.M., & Wezeman, F.R.A. 1993. On the psychometric properties of the Life Regard Index (LRI): A measure of meaningful life. Personality and Individual Differences. 14: 337–345.
Diener, E. & Scollon, C. 2003. Subjective well-being is desirable, but not the summum bonum. t.pt.
Diener, E., Scollon, C. and Lucas, R. 2003. The evolving concept of subjective well-being: the multifaceted nature of happiness. Advances in Cell Aging and Gerontology. 15: 187–219.
Emmons, R.A. & McCullough, M.E. 2003. Counting blessings versus burdens : An experimental investigation of gratitude and subjective well-being in daily life. Journal of Personality and Social Psychology. 84 (2): 377-389.
Fournier, D.K. 2009. Thanksgiving : Love, gratitude and the meaning of life. http://www.catholic.org/national/national_story.php?id=34919 [22 Mei 2010].
Kashdan, T.B., Mishra, Anjali, Breen, W.E. & Froh, J.J. 2009. Gender differences in gratitude : Examining appraisals, narratives, the willingness to express emotions and changes in psychological needs. Journal of Personality. 77: 3.
Kashdan, T.B., Uswatte, G., & Julian, T. 2006. Gratitude and hedonic and eudaimonic well-being in Vietnam wars veterans. Behaviour Research and Therapy. 44: 177-199.
Lyubomirsky, S. 2001. Why are some people happier than others?: The role of cognitive and motivational processes in well-being. American Psychologist. 56: 239-249.
Lyubomirsky, S. 2008. The how of happiness: A practical approach to getting the life you want. London: Sphere.
Lyubomirsky, S. & Lepper, H.S. 1997. A measure of subjective happiness: preliminary reliability and construct validation. Social Indicator research. 46: 137-155.
McCullough, M. E., Tsang, J., & Emmons, R. A. 2004. Gratitude in intermediate affective terrain: Links of grateful moods to individual differences and daily emotional experience. Journal of Personality and Social Psychology. 86: 295–309.
Seligman, M. E. P. 2002. Authentic happiness. New York: Free Press.
Seligman, M.E.P. & Royzman, E. 2003. Happiness : The three traditional theories. http://www.authentichappiness.sas.upenn.edu/newsletter.aspx?id=49 [15 Mei 2010].
Steger, M.F., Frazier, P., Oishi, S. & Kaler, M. 2006. The meaning in life questionnaire : Assessing the presence of and search meaning in life. Journal of Counseling Psychology. 53(1): 80-93.
Stewart, P.W. 2004. Small and/or pilot studies. http://www.cincinnatichildrens.org/research/cores/gcrc/protocols/Small_or_Pilot_Studies.htm [1 Mac 2010].
Toepfer, S. 2008. Want to be happier? Be more grateful. http://www.sciencedaily.com/releases/2008/11/081125113005.htm. [11 Mei 2010].
Watkins, P. C., Woodward, K., Stone, T., & Kolts, R. L. 2003. Gratitude and happiness: Development of a measure of gratitude, and relationships with subjective well-being. Social Behavior and Personality. 31: 431–451.
White, L.B. 2004. The psychological well-being and academic achievement of children raised by single parents. American Psychological Association. 5: 27.
Wood, A.M., Maltby, J., Stewart, N. & Joseph, Stephen. 2008. Conceptualizing gratitude and appreciation as a unitary personality trait. Personality and Individual Differences. 44: 619-630.
Wright, S. 2009. Gratitude may be the ultimate positive emotion. http://www.meaningandhappiness.com/gratitude-ultimate-positive-emotion/320/ [4 Mei 2010].