APA (7th ed.) Zitazioa

Greene, G. (1975). Twenty-one stories. Penguin book.

Chicago Style (17th ed.) Zitazioa

Greene, Graham. Twenty-one Stories. New York: Penguin book, 1975.

MLA (9th ed.) Zitazioa

Greene, Graham. Twenty-one Stories. Penguin book, 1975.