APA (7th ed.) Citation

Hornby, A. S. (1965). Oxford Progressive English Course. Oxford University Press.

Chicago Style (17th ed.) Citation

Hornby, A. S. Oxford Progressive English Course. London: Oxford University Press, 1965.

MLA (9th ed.) Citation

Hornby, A. S. Oxford Progressive English Course. Oxford University Press, 1965.

Warning: These citations may not always be 100% accurate.