¹ ”Lyckans verktyg”
Sonja Lyubomirski

² ”Positive Psychology”
C.R. snyder & shane J. Lopez

”Autentisk Lycka”
Martin Seligman

”The Journal of Positive Psychology”
Publicerad av Routledge

³"Beyond Money - Toward an Economy of Well-Being"
Ed Diener and Martin E.P. Seligman (2004)
University of Illinois, the Gallup Organization, and University of Pennsylvania

”Happiness, Lessons from a New Science”
Richard Layard’s s. 30

⁴ “Decisions and Revisions: The Affective Forecasting of Changeable Outcomes”
Daniel T. Gilbert, et. al. Harvard University
Journal of Personality and Social Psychology Copyright 2002 by the American Psychological Association, Inc., Vol. 82, No.4,

“Spending Money on Others Promotes Happiness”
Elizabeth W. Dunn, Lara B. Aknin, Michael I. Norton
”Science” 21 March 2008
University of British Columbia, Harvard Business School

⁵ "Dynamic Spread of Happiness in a Large Social Network: Longitudinal Analysis Over 20 Years in the Framingham Heart Study"
James H. Fowler, University of California, San Diego - Department of Political Science
Nicholas A. Christakis, Harvard University - Department of Health Care Policy
British Medical Journal, Vol. 3, January 2009

⁶ ”Very happy people.”
Diener E, Seligman M. E. P.
Department of Psychology, University of Illinois, 2002. Psychological Science, 13, 80 - 83.

⁷ ”Lyckans verktyg”
Sonja Lyubomirski

⁸ ”Lyckans verktyg”
Sonja Lyubomirski s. 28