Jeffreys, M. (2002). Success secrets of fifteen motivational superstars. Jaico.
芝加哥风格引文Jeffreys, Michael. Success Secrets of Fifteen Motivational Superstars. Mumbai: Jaico, 2002.
MLA引文Jeffreys, Michael. Success Secrets of Fifteen Motivational Superstars. Jaico, 2002.
警告：这些引文格式不一定是100％准确.