Cita APA (7th ed.)

Willoughby, W. W., & Sachs, L. (1929). The constitutional law of the United States (2nd ed.). Baker, Voorhis.

Cita Chicago (17th ed.)

Willoughby, Westel Woodbury, i Leon Sachs. The Constitutional Law of the United States. 2nd ed. New York: Baker, Voorhis, 1929.

Cita MLA (9th ed.)

Willoughby, Westel Woodbury, i Leon Sachs. The Constitutional Law of the United States. 2nd ed. Baker, Voorhis, 1929.