APA (7th ed.) Citation

(1986). Webster's third new international dictionary of the English language unabridged with seven language dictionary. Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Webster's Third New International Dictionary of the English Language Unabridged with Seven Language Dictionary. Chicago: Encyclopaedia Britannica, 1986.

MLA (9th ed.) Citation

Webster's Third New International Dictionary of the English Language Unabridged with Seven Language Dictionary. Encyclopaedia Britannica, 1986.