Παραπομπή APA

Lefton, L. A. (1985). Psychology (3rd ed.). Allyn and Bacon.

Παραπομπή Chicago Style

Lefton, Lester A. Psychology. 3rd ed. Boston: Allyn and Bacon, 1985.

Παραπομπή MLA

Lefton, Lester A. Psychology. 3rd ed. Allyn and Bacon, 1985.