APA (7th ed.) Citation

Katz, W. A. (2003). Digital reference services. Haworth Information Press.

Chicago Style (17th ed.) Citation

Katz, William A. Digital Reference Services. Binghamton, NY: Haworth Information Press, 2003.

MLA (8th ed.) Citation

Katz, William A. Digital Reference Services. Haworth Information Press, 2003.