Cita APA (7th ed.)
Richards, B. (1959). The heart of a champion. Fleming H. Revell.
Cita Chicago (17th ed.)
Richards, Bob. The Heart of a Champion. Westwood: Fleming H. Revell, 1959.
Cita MLA (9th ed.)
Richards, Bob. The Heart of a Champion. Fleming H. Revell, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.