Gaya APA

McGonagle, J, J., Vella, C, M. (2001). How to Use a Consultant in Your Company : a manager's and Executivess Guide . New York: John Wiley & Sons, Inc.

Gaya MLA

McGonagle, John, J.., Vella, Carolyn, M.. "How to Use a Consultant in Your Company : a manager's and Executivess Guide". New York: John Wiley & Sons, Inc, 2001. Buku.