APA (7th ed.) Citation

Vickery, B. C. (1965). On retrieval system theory (2nd ed.). Butterworths.

Chicago Style (17th ed.) Citation

Vickery, Brian Campbell. On Retrieval System Theory. 2nd ed. London: Butterworths, 1965.

MLA (9th ed.) Citation

Vickery, Brian Campbell. On Retrieval System Theory. 2nd ed. Butterworths, 1965.