Maxwell, J. C. (2007). The 21 irrefutable laws of leadership: Follow them and people will follow you (Rev. and updated 10th anniversary ed.). Thomas Nelson.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Maxwell, John C. The 21 Irrefutable Laws of Leadership: Follow Them and People Will Follow You. Rev. and updated 10th anniversary ed. Nashville, Tenn.: Thomas Nelson, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Maxwell, John C. The 21 Irrefutable Laws of Leadership: Follow Them and People Will Follow You. Rev. and updated 10th anniversary ed. Thomas Nelson, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.