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

APA Citation Edition Citation

International ISBN Agency. (1990). Publishers' international ISBN directory (17th ed. (1990/91).). Saur Bowker.

Chicago Citation Edition Citation

International ISBN Agency. Publishers' International ISBN Directory. 17th ed. (1990/91). München : New York: Saur Bowker, 1990.

MLA Citation Edition Citation

International ISBN Agency. Publishers' International ISBN Directory. 17th ed. (1990/91). Saur Bowker, 1990.