Cita APA (7th ed.)

Hooker, A. A. (1939). The international grain trade. Sir I. Pitman & Sons.

Cita Chicago (17th ed.)

Hooker, Albert Ayerst. The International Grain Trade. London: Sir I. Pitman & Sons, 1939.

Cita MLA (9th ed.)

Hooker, Albert Ayerst. The International Grain Trade. Sir I. Pitman & Sons, 1939.