3. Flow and the foundations of positive psychology: the collected works of Mihaly Csikszentmihalyi Csikszentmihalyi, Mihaly. Dordrecht : Springer, c2014. PSY209
4. The Wiley-Blackwell handbook of positive psychological interventions Hoboken : Wiley Blackwell, 2014. PSY209
5. Authentic happiness: using the new positive psychology to realize your potential for lasting fulfillment Seligman, Martin E. P. New York : Atria Paperback, 2013. PSY209
6. Positivity: top-notch research reveals the 3-to-1 ratio that will change your life Fredrickson, Barbara. New York, NY : Three Rivers Press, c2009. PSY209
