APA (7th ed.) Citation

Allen, R. E., & Hawkins, J. (1991). The Oxford encyclopedic English. Clarendon Press: Oxford University Press.

Chicago Style (17th ed.) Citation

Allen, R. E., and Joyce Hawkins. The Oxford Encyclopedic English. Oxford New York: Clarendon Press: Oxford University Press, 1991.

MLA (8th ed.) Citation

Allen, R. E., and Joyce Hawkins. The Oxford Encyclopedic English. Clarendon Press: Oxford University Press, 1991.