APA (7th ed.) Citation

Hornby, A. S., & Paul Cowie, A. (1989). Oxford advanced leaner's dictionary of current english (4th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Hornby, Albert Sydney, and Anthony Paul Cowie. Oxford Advanced Leaner's Dictionary of Current English. 4th ed. New York: Oxford University Press, 1989.

MLA (9th ed.) Citation

Hornby, Albert Sydney, and Anthony Paul Cowie. Oxford Advanced Leaner's Dictionary of Current English. 4th ed. Oxford University Press, 1989.