APA (7th ed.) Citation

Oxford University Press, Simpson, J. A., & Weiner, E. S. C. (1989). The Oxford English dictionary (2nd ed.). Clarendon Press ; Oxford University Press.

Chicago Style (17th ed.) Citation

Oxford University Press, J. A. Simpson, and E. S. C. Weiner. The Oxford English Dictionary. 2nd ed. Oxford : New York: Clarendon Press ; Oxford University Press, 1989.

MLA (9th ed.) Citation

Oxford University Press, et al. The Oxford English Dictionary. 2nd ed. Clarendon Press ; Oxford University Press, 1989.