APA (7th ed.) Citation

Aslib, 2., & Wilson, B. J. (1968). Aslib directory. London.

Chicago Style (17th ed.) Citation

Aslib, 267868, and Brian J. Wilson. Aslib Directory. London, 1968.

MLA (9th ed.) Citation

Aslib, 267868, and Brian J. Wilson. Aslib Directory. London, 1968.