APA (7th ed.) Citation

Houghton, B., & Convey, J. (1977). On-line information retrieval systems: An introductory manual to principles and practice. Bingley.

Chicago Style (17th ed.) Citation

Houghton, Bernard, and John Convey. On-line Information Retrieval Systems: An Introductory Manual to Principles and Practice. London: Bingley, 1977.

MLA (9th ed.) Citation

Houghton, Bernard, and John Convey. On-line Information Retrieval Systems: An Introductory Manual to Principles and Practice. Bingley, 1977.