Gaya APA

Lukacs, G., Feldman, R, S. (2009,2005). Essentials Of Understanding Psychology (8th Edition,6th Edition). Boston: Mc Graw Hill Higher Education.

Gaya MLA

Lukacs, Georg., Feldman, Robert, S.. "Essentials Of Understanding Psychology". 8th Edition,6th Edition Boston: Mc Graw Hill Higher Education, 2009,2005. Text.