Froh, J. J., & Parks, A. C. (2013). Activities for teaching positive psychology: Guide for instructors (First edition.). American Psychological Association.
Lua i Stíl Chicago (17ú heag.)Froh, Jeffrey J., agus Acacia C. Parks. Activities for Teaching Positive Psychology: Guide for Instructors. First edition. Washington: American Psychological Association, 2013.
Lua MLA (9ú heag.)Froh, Jeffrey J., agus Acacia C. Parks. Activities for Teaching Positive Psychology: Guide for Instructors. First edition. American Psychological Association, 2013.
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