APA (7th ed.) Citation

(1991). Webster's Ninth New Collegiate Dictionary. Merriam-Webster.

Chicago Style (17th ed.) Citation

Webster's Ninth New Collegiate Dictionary. New-York: Merriam-Webster, 1991.

MLA (8th ed.) Citation

Webster's Ninth New Collegiate Dictionary. Merriam-Webster, 1991.

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