APA (7th ed.) Citation

Hall, J. L. (1979). On-line bibliographic data bases: 1979 directory. Aslib.

Chicago Style (17th ed.) Citation

Hall, J. L. On-line Bibliographic Data Bases: 1979 Directory. London: Aslib, 1979.

MLA (9th ed.) Citation

Hall, J. L. On-line Bibliographic Data Bases: 1979 Directory. Aslib, 1979.