Mandino, O. (1995). Og Mandino's great trilogy (5th ed.). Frederick Fell Pub.
Cita Chicago (17th ed.)Mandino, Og. Og Mandino's Great Trilogy. 5th ed. Hollywood, FL: Frederick Fell Pub, 1995.
Cita MLA (9th ed.)Mandino, Og. Og Mandino's Great Trilogy. 5th ed. Frederick Fell Pub, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.