APA (7th ed.) Citation

(1977). Directory of operational computer applications in United Kingdom libraries and information units (2nd ed.). Aslib.

Chicago Style (17th ed.) Citation

Directory of Operational Computer Applications in United Kingdom Libraries and Information Units. 2nd ed. London: Aslib, 1977.

MLA (9th ed.) Citation

Directory of Operational Computer Applications in United Kingdom Libraries and Information Units. 2nd ed. Aslib, 1977.