APA (7th ed.) Citation

Webster, N. (1970). An American dictionary of the English language. Johnson Reprint.

Chicago Style (17th ed.) Citation

Webster, Noah. An American Dictionary of the English Language. New York [etc.]: Johnson Reprint, 1970.

MLA (9th ed.) Citation

Webster, Noah. An American Dictionary of the English Language. Johnson Reprint, 1970.

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