Citazione Stile APA (7a Edizione)

Wittig, A. F., & Williams, G. (1984). Psychology: An introduction. McGraw-Hill Book Company.

Citazione stile Chigago Style (17a edizione)

Wittig, Arno F., e Gurney Williams. Psychology: An Introduction. New York: McGraw-Hill Book Company, 1984.

Citatione MLA (9a ed.)

Wittig, Arno F., e Gurney Williams. Psychology: An Introduction. McGraw-Hill Book Company, 1984.