APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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