APA (7th ed.) Zitazioa

Guinness, O. (1993). The American hour. The free press.

Chicago Style (17th ed.) Zitazioa

Guinness, Os. The American Hour. New York: The free press, 1993.

MLA (9th ed.) Zitazioa

Guinness, Os. The American Hour. The free press, 1993.