Holtz, H., & Zahn, D. (2004). How to succeed as an independent consultant (4th ed.). Wiley.
芝加哥风格引文Holtz, Herman, 与 David Zahn. How to Succeed as an Independent Consultant. 4th ed. Hoboken, N.J.: Wiley, 2004.
MLA引文Holtz, Herman, 与 David Zahn. How to Succeed as an Independent Consultant. 4th ed. Wiley, 2004.
警告：这些引文格式不一定是100％准确.