APA aipamena

Robert E Franken. (1998). Human motivation (4.). Brooks.

Chicago Style aipamena

Robert E Franken. Human Motivation. 4. Pacific Grove: Brooks, 1998.

MLA aipamena

Robert E Franken. Human Motivation. 4. Brooks, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.