Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

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