APA (7th ed.) Citation

Knight, D. M. (1989). A companion to the physical sciences. Routledge.

Chicago Style (17th ed.) Citation

Knight, David M. A Companion to the Physical Sciences. London ; New York: Routledge, 1989.

MLA (9th ed.) Citation

Knight, David M. A Companion to the Physical Sciences. Routledge, 1989.