APA (7th ed.) Citation

Association of Special Libraries and Information Bureaux (Great Britain) & Codlin, E. M. (1980). Aslib directory (4th ed.). Aslib.

Chicago Style (17th ed.) Citation

Association of Special Libraries and Information Bureaux (Great Britain) and Ellen Mabel Codlin. Aslib Directory. 4th ed. London: Aslib, 1980.

MLA (9th ed.) Citation

Association of Special Libraries and Information Bureaux (Great Britain) and Ellen Mabel Codlin. Aslib Directory. 4th ed. Aslib, 1980.

Warning: These citations may not always be 100% accurate.