APA Citatie

Katz, W. A. (1969). Introduction to reference work. 2v: Reference services&reference processes. New York.

Chicago Style citaat

Katz, William A. Introduction to Reference Work. 2v: Reference Services&reference Processes. McGraw Hill: New York, 1969.

MLA citatie

Katz, William A. Introduction to Reference Work. 2v: Reference Services&reference Processes. New York, 1969.