APA

Hornby A. S., Gatenby E. V. & Wakefield H. (1972). The advanced learner's dictionary of currrent english. London: Oxford University Press.

Chicago

Hornby A S, Gatenby E V and Wakefield H. 1972. The advanced learner's dictionary of currrent english. London: Oxford University Press.

Harvard

Hornby A. S., Gatenby E. V. and Wakefield H. (1972). The advanced learner's dictionary of currrent english. London: Oxford University Press.

MLA

Hornby A S, Gatenby E V and Wakefield H. The advanced learner's dictionary of currrent english. London: Oxford University Press. 1972.