APA aipamena

Gilbert, R. M. (1979). Coffee, tea and cigarette use.

Chicago Style aipamena

Gilbert, R. M. Coffee, Tea and Cigarette Use. 1979.

MLA aipamena

Gilbert, R. M. Coffee, Tea and Cigarette Use. 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.