APA (7th ed.) Citation

Cowie, A. (1989). Oxford advanced learner's dictionary of current english (4th ed.). Oxfor University Press.

Chicago Style (17th ed.) Citation

Cowie, A.P. Oxford Advanced Learner's Dictionary of Current English. 4th ed. New York: Oxfor University Press, 1989.

MLA (9th ed.) Citation

Cowie, A.P. Oxford Advanced Learner's Dictionary of Current English. 4th ed. Oxfor University Press, 1989.