Lua APA (7ú heag.)

Day, C. (1925). History of commerce of the United States. Longmans, Green and Co..

Lua i Stíl Chicago (17ú heag.)

Day, Clive. History of Commerce of the United States. New York [etc.]: Longmans, Green and Co., 1925.

Lua MLA (8ú heag.)

Day, Clive. History of Commerce of the United States. Longmans, Green and Co., 1925.

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