Oxford advanced Learner's dictionary of current English

MLA

Hornby, A. S, A. P Cowie, and A. C Gimson. Oxford Advanced Learner's Dictionary of Current English. 15th impression Oxford: Oxford University Press, 1981.

APA

Hornby, A. S, Cowie, A. P, & Gimson, A. C. (1981). Oxford advanced Learner's dictionary of current English. 15th impression Oxford: Oxford University Press.

Chicago

Hornby, A. S., A. P Cowie, and A. C Gimson. Oxford Advanced Learner's Dictionary of Current English. 15th impression Oxford: Oxford University Press, 1981.