Jeffreys, M. (2002). Success secrets of fifteen motivational superstars. Jaico.
Čikaški stil citiranja (17. izdanje)Jeffreys, Michael. Success Secrets of Fifteen Motivational Superstars. Mumbai: Jaico, 2002.
MLA način citiranja (9. izdanje)Jeffreys, Michael. Success Secrets of Fifteen Motivational Superstars. Jaico, 2002.
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