APA (7th ed.) Citation

Willoughby, W. W. (1912). Principles of the constitutional law of the United States. Baker, Voorhis & co..

Chicago Style (17th ed.) Citation

Willoughby, Westel Woodbury. Principles of the Constitutional Law of the United States. New York: Baker, Voorhis & co., 1912.

MLA (9th ed.) Citation

Willoughby, Westel Woodbury. Principles of the Constitutional Law of the United States. Baker, Voorhis & co., 1912.

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