Citazione Stile APA (7a Edizione)

Usher , A. P. (1929). A history of mechanical inventions. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Usher , Abbott Payson. A History of Mechanical Inventions. New York: McGraw-Hill, 1929.

Citatione MLA (9a ed.)

Usher , Abbott Payson. A History of Mechanical Inventions. McGraw-Hill, 1929.