Cita APA (7th ed.)

Willoughby, W. F. (1936). The government of modern states. D. Appleton-Century company, incorporated.

Cita Chicago (17th ed.)

Willoughby, William Franklin. The Government of Modern States. New York, London: D. Appleton-Century company, incorporated, 1936.

Cita MLA (9th ed.)

Willoughby, William Franklin. The Government of Modern States. D. Appleton-Century company, incorporated, 1936.