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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (8ú heag.)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.
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