Cita APA (7th ed.)

Willoughby, W. F. (1936). The government of modern states (Revised and enlarged edition.). D. Appleton-Century.

Cita Chicago (17th ed.)

Willoughby, William F. The Government of Modern States. Revised and enlarged edition. New York: D. Appleton-Century, 1936.

Cita MLA (9th ed.)

Willoughby, William F. The Government of Modern States. Revised and enlarged edition. D. Appleton-Century, 1936.