APA (7th ed.) Citation

Willoughby, W. W. (1910). The constitutional law of the United States. Baker, Voorhis & Company.

Chicago Style (17th ed.) Citation

Willoughby, Westel Woodbury. The Constitutional Law of the United States. New York: Baker, Voorhis & Company, 1910.

MLA (9th ed.) Citation

Willoughby, Westel Woodbury. The Constitutional Law of the United States. Baker, Voorhis & Company, 1910.