APA استشهاد

Katz, W. A. (1969). Introduction to reference work. 2v: Basic information sources. New York.

استشهاد بنمط شيكاغو

Katz, William A. Introduction to Reference Work. 2v: Basic Information Sources. McGraw Hill: New York, 1969.

MLA استشهاد

Katz, William A. Introduction to Reference Work. 2v: Basic Information Sources. New York, 1969.