APA (7th ed.) Citation

Simpson, J. A., Weiner, E. S. C., & Proffitt, M. (1993). Oxford English dictionary. Clarendon Press.

Chicago Style (17th ed.) Citation

Simpson, J. A., E. S. C. Weiner, and Michael Proffitt. Oxford English Dictionary. Oxford, [England]: Clarendon Press, 1993.

MLA (9th ed.) Citation

Simpson, J. A., et al. Oxford English Dictionary. Clarendon Press, 1993.