Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

International ISBN Agency. (1989). Publishers' international ISBN directory (16th ed. (1989/90).). Saur Bowker.

Chicago Citation Edition Citation

International ISBN Agency. Publishers' International ISBN Directory. 16th ed. (1989/90). München : New York: Saur Bowker, 1989.

MLA Citation Edition Citation

International ISBN Agency. Publishers' International ISBN Directory. 16th ed. (1989/90). Saur Bowker, 1989.