Cita APA

Willoughby, W. W. (1910). Constitutional law of the United States. New York: Baker Voorhis.

Citación estilo Chicago

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

Cita MLA

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