APA (7th ed.) Citation

Hall, J. L., & Brown, M. J. (1981). Online bibliographic databases: An international directory (2nd ed.). Aslib ; Gale Research Co. [distributor].

Chicago Style (17th ed.) Citation

Hall, J. L., and Marjorie J. Brown. Online Bibliographic Databases: An International Directory. 2nd ed. London : Detroit, Mich: Aslib ; Gale Research Co. [distributor], 1981.

MLA (8th ed.) Citation

Hall, J. L., and Marjorie J. Brown. Online Bibliographic Databases: An International Directory. 2nd ed. Aslib ; Gale Research Co. [distributor], 1981.