Jeffreys, M. (2002). Success secrets of fifteen motivational superstars. Jaico.
Chicagoスタイル(17版)引用形式Jeffreys, Michael. Success Secrets of Fifteen Motivational Superstars. Mumbai: Jaico, 2002.
MLA(9版)引用形式Jeffreys, Michael. Success Secrets of Fifteen Motivational Superstars. Jaico, 2002.
警告: この引用は必ずしも正確ではありません.