Hartmann, T. (2007). Cracking the code: How to win hearts, change minds, and restore America's original vision. Berrett-Koehler Publishers.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Hartmann, Thom. Cracking the Code: How to Win Hearts, Change Minds, and Restore America's Original Vision. San Francisco, Calif.: Berrett-Koehler Publishers, 2007.
MLA -ийн эшлэл (9 дэх хэвлэлт)Hartmann, Thom. Cracking the Code: How to Win Hearts, Change Minds, and Restore America's Original Vision. Berrett-Koehler Publishers, 2007.
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