APA (7th ed.) Zitazioa

Telfer, E. (1980). Happiness. Macmillan Pr..

Chicago Style (17th ed.) Zitazioa

Telfer, Elizabeth. Happiness. London: Macmillan Pr., 1980.

MLA (9th ed.) Zitazioa

Telfer, Elizabeth. Happiness. Macmillan Pr., 1980.