APA aipamena

Katz, W. A. (1969). Introduction to reference work: Basic information sources. New York: McGraw-Hill.

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.