Cita APA (7th ed.)

Katz, W. A. (1984). Evaluation of reference services. Haworth Press.

Cita Chicago (17th ed.)

Katz, William Armstrong. Evaluation of Reference Services. New York: Haworth Press, 1984.

Cita MLA (9th ed.)

Katz, William Armstrong. Evaluation of Reference Services. Haworth Press, 1984.