APA (7th ed.) Citation

Willis, M. R. (1999). Dealing with difficult people in the library. American Library Association.

Chicago Style (17th ed.) Citation

Willis, Mark R. Dealing with Difficult People in the Library. Chicago: American Library Association, 1999.

MLA (9th ed.) Citation

Willis, Mark R. Dealing with Difficult People in the Library. American Library Association, 1999.