APA (7th ed.) Citation

Nelson, B., & Economy, P. (1997). Consulting for dummies. IDG Books.

Chicago Style (17th ed.) Citation

Nelson, Bob, and Peter Economy. Consulting for Dummies. Foster City, CA: IDG Books, 1997.

MLA (9th ed.) Citation

Nelson, Bob, and Peter Economy. Consulting for Dummies. IDG Books, 1997.