Hough, R. (1973). A history of the world’s motorcycles. New York: Harper & Row.
Trích dẫn kiểu ChicagoHough, Richard. A History of the World’s Motorcycles. New York: Harper & Row, 1973.
Deismireacht MLAHough, Richard. A History of the World’s Motorcycles. New York: Harper & Row, 1973.
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