APA (7th ed.) Citation

Thatcher, V. S., Webster, N., & McQueen, A. (1968). The New Webster Encyclopedic Dictionary of the English Language ([international editon].). Grolier.

Chicago Style (17th ed.) Citation

Thatcher, Virginia S., Noah Webster, and Alexander McQueen. The New Webster Encyclopedic Dictionary of the English Language. [international editon]. New York: Grolier, 1968.

MLA (9th ed.) Citation

Thatcher, Virginia S., et al. The New Webster Encyclopedic Dictionary of the English Language. [international editon]. Grolier, 1968.