APA-referens (7:e uppl.)

Holtz, H., & Zahn, D. (2004). How to succeed as an independent consultant (4th ed.). Wiley.

Chicago-referens (17:e uppl.)

Holtz, Herman, och David Zahn. How to Succeed as an Independent Consultant. 4th ed. Hoboken, N.J.: Wiley, 2004.

MLA-referens (8:e uppl.)

Holtz, Herman, och David Zahn. How to Succeed as an Independent Consultant. 4th ed. Wiley, 2004.