Harmon, F. G. (1996). Playing for keeps: How the world's most aggressive and admired companies use core values to manage, energize, and organize their people and promote, advance, and achieve their corporate missions. J. Wiley.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Harmon, Frederick G. Playing for Keeps: How the World's Most Aggressive and Admired Companies Use Core Values to Manage, Energize, and Organize Their People and Promote, Advance, and Achieve Their Corporate Missions. New York: J. Wiley, 1996.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Harmon, Frederick G. Playing for Keeps: How the World's Most Aggressive and Admired Companies Use Core Values to Manage, Energize, and Organize Their People and Promote, Advance, and Achieve Their Corporate Missions. J. Wiley, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.