Cita APA (7th ed.)
Goodman, R. B., Clason, G. S., Feher, J., & Spicer, R. A. (1974). The richest man in Babylon. Island Heritage distributed by Island Heritage Ltd. (USA).
Cita Chicago (17th ed.)
Goodman, Robert B., George S. Clason, Joseph Feher, i Robert A. Spicer. The Richest Man in Babylon. Norfolk Island, Australia : Honolulu: Island Heritage distributed by Island Heritage Ltd. (USA), 1974.
Cita MLA (9th ed.)
Goodman, Robert B., et al. The Richest Man in Babylon. Island Heritage distributed by Island Heritage Ltd. (USA), 1974.
Atenció: Aquestes cites poden no estar 100% correctes.