Gaya APA

Lopez, S, J., Snyder, C. (2006). Positive Psychological Assessment : A Handbook of Models and Measures . Washington: American Pychologia Association.

Gaya MLA

Lopez, Shane, J.., Snyder, C.R.. "Positive Psychological Assessment : A Handbook of Models and Measures". Washington: American Pychologia Association, 2006. Text.