APA (7th ed.) Zitazioa

Richards, B. (1959). The heart of a champion. Fleming H. Revell.

Chicago Style (17th ed.) Zitazioa

Richards, Bob. The Heart of a Champion. Westwood: Fleming H. Revell, 1959.

MLA (9th ed.) Zitazioa

Richards, Bob. The Heart of a Champion. Fleming H. Revell, 1959.