Gaya APA

Wittig, A, F., Sinnett, L, M. (2002). Schaum's easy outlines introduction to psychology . New York: McGraw-Hill.

Gaya MLA

Wittig, Arno, F.., Sinnett, Laura, M.. "Schaum's easy outlines introduction to psychology". New York: McGraw-Hill, 2002. Text.