APA (7th ed.) Citation

(1983). Webster's new twentieth century dictionary of the english language unabbidged. Prentice Hall Press.

Chicago Style (17th ed.) Citation

Webster's New Twentieth Century Dictionary of the English Language Unabbidged. Prentice Hall Press, 1983.

MLA (8th ed.) Citation

Webster's New Twentieth Century Dictionary of the English Language Unabbidged. Prentice Hall Press, 1983.