APA (7th ed.) Citation

Lundin, W., Dobson,michael singer, & Lundin, K. (2009). Working with difficult people (2nd ed.). AMACOM.

Chicago Style (17th ed.) Citation

Lundin, William, Dobson,michael singer, and Kathleen Lundin. Working with Difficult People. 2nd ed. New York: AMACOM, 2009.

MLA (8th ed.) Citation

Lundin, William, et al. Working with Difficult People. 2nd ed. AMACOM, 2009.