Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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