APA aipamena

Katz, W. A. (1992). Introduction to reference work. New York: McGraw-Hill.

Chicago Style aipamena

Katz, William A. Introduction to Reference Work. New York: McGraw-Hill, 1992.

MLA aipamena

Katz, William A. Introduction to Reference Work. New York: McGraw-Hill, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.