Usher , A. P. (1929). A history of mechanical inventions. McGraw-Hill.
Chicagoスタイル(17版)引用形式Usher , Abbott Payson. A History of Mechanical Inventions. New York: McGraw-Hill, 1929.
MLA(9版)引用形式Usher , Abbott Payson. A History of Mechanical Inventions. McGraw-Hill, 1929.
警告: この引用は必ずしも正確ではありません.