Aslib. (1977). Aslib directory (4th ed.). Aslib.
Chicago Style (17th ed.) CitationAslib. Aslib Directory. 4th ed. London: Aslib, 1977.
MLA (9th ed.) CitationAslib. Aslib Directory. 4th ed. Aslib, 1977.
Warning: These citations may not always be 100% accurate.