Cita APA (7a ed.)

Wolfe, A. J. (1919). Theory and practice of international commerce. International Book Publishing Company.

Cita Chicago Style (17a ed.)

Wolfe, Archibald J. Theory and Practice of International Commerce. New York [etc.]: International Book Publishing Company, 1919.

Cita MLA (9a ed.)

Wolfe, Archibald J. Theory and Practice of International Commerce. International Book Publishing Company, 1919.