APA (7th ed.) Citation

The National Lexicographic Board. (1955). The new american Webster dictionary (tenth printing.).

Chicago Style (17th ed.) Citation

The National Lexicographic Board. The New American Webster Dictionary. tenth printing. 1955.

MLA (8th ed.) Citation

The National Lexicographic Board. The New American Webster Dictionary. tenth printing. 1955.

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