APA-Zitierstil (7. Ausg.)

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

Chicago-Zitierstil (17. Ausg.)

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

MLA-Zitierstil (9. Ausg.)

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