APA-referens (7:e uppl.)
Hartmann, T. (2007). Cracking the code: How to win hearts, change minds, and restore America's original vision. Berrett-Koehler Publishers.
Chicago-referens (17:e uppl.)
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-referens (9:e uppl.)
Hartmann, Thom. Cracking the Code: How to Win Hearts, Change Minds, and Restore America's Original Vision. Berrett-Koehler Publishers, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.