Cita APA (7a ed.)

Willoughby, W. W., & Sachs, L. (1929). The constitutional law of the United States. Baker, Voorhis.

Cita Chicago Style (17a ed.)

Willoughby, Westel Woodbury, y Leon Sachs. The Constitutional Law of the United States. New York: Baker, Voorhis, 1929.

Cita MLA (9a ed.)

Willoughby, Westel Woodbury, y Leon Sachs. The Constitutional Law of the United States. Baker, Voorhis, 1929.