APA (7th ed.) Zitazioa

Graham, B. (1960). Answers to life's problems. Grason.

Chicago Style (17th ed.) Zitazioa

Graham, Billy. Answers to Life's Problems. Minneapolis: Grason, 1960.

MLA (9th ed.) Zitazioa

Graham, Billy. Answers to Life's Problems. Grason, 1960.