APA (7th ed.) Zitazioa

Gardner, J. W. (1978). Morale. W. W. Norton.

Chicago Style (17th ed.) Zitazioa

Gardner, John W. Morale. New York: W. W. Norton, 1978.

MLA (9th ed.) Zitazioa

Gardner, John W. Morale. W. W. Norton, 1978.