APA引文

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

芝加哥风格引文

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

MLA引文

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