APA (7th ed.) Citation

Managing, J. B. (1991). Directory of online databases. Volume 12, Numbers 3 and 4. Gale Research International Limited.

Chicago Style (17th ed.) Citation

Managing, Jeffrey Barg. Directory of Online Databases. Volume 12, Numbers 3 and 4. Detroid: Gale Research International Limited, 1991.

MLA (8th ed.) Citation

Managing, Jeffrey Barg. Directory of Online Databases. Volume 12, Numbers 3 and 4. Gale Research International Limited, 1991.