APA (7th ed.) Citation
Hornby, A. (1986). Oxford Students Dictionary of American English. Oxford University Press.
Chicago Style (17th ed.) Citation
Hornby, A.S. Oxford Students Dictionary of American English. Oxford: Oxford University Press, 1986.
MLA (9th ed.) Citation
Hornby, A.S. Oxford Students Dictionary of American English. Oxford University Press, 1986.
Warning: These citations may not always be 100% accurate.