APA (7th ed.) Citation

Willis, A., & Stewart, T. (1989). Computers : a guide to choosing and using / Andrew Willis and Thomas Stewart: A guide to choosing and using. Oxford University Press.

Chicago Style (17th ed.) Citation

Willis, Andrew, and Thomas Stewart. Computers : A Guide to Choosing and Using / Andrew Willis and Thomas Stewart: A Guide to Choosing and Using. Oxford: Oxford University Press, 1989.

MLA (9th ed.) Citation

Willis, Andrew, and Thomas Stewart. Computers : A Guide to Choosing and Using / Andrew Willis and Thomas Stewart: A Guide to Choosing and Using. Oxford University Press, 1989.

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