Cita APA (7a ed.)

Whitaker, A. C. (1920). Foreign exchange. D. Appleton and Company.

Cita Chicago Style (17a ed.)

Whitaker, Albert Conser. Foreign Exchange. New York [etc.]: D. Appleton and Company, 1920.

Cita MLA (9a ed.)

Whitaker, Albert Conser. Foreign Exchange. D. Appleton and Company, 1920.