APA (7th ed.) Citation

WEBSTER'S... & Nellson, W. A. (1956). Webster's new international dictionary. Unbridged.

Chicago Style (17th ed.) Citation

WEBSTER'S... and William Allan Nellson. Webster's New International Dictionary. Unbridged, 1956.

MLA (8th ed.) Citation

WEBSTER'S... and William Allan Nellson. Webster's New International Dictionary. Unbridged, 1956.

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