Cita APA (7a ed.)

Thornton, A. P. (1965). Doctrines of imperialism. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Thornton, A. P. Doctrines of Imperialism. New York: John Wiley & Sons, 1965.

Cita MLA (8a ed.)

Thornton, A. P. Doctrines of Imperialism. John Wiley & Sons, 1965.