Cita APA (7a ed.)

Dudley, D. W. (1969). The evolution of the gear art. American Gear Manufacturers Association.

Cita Chicago Style (17a ed.)

Dudley, Darle W. The Evolution of the Gear Art. Washington: American Gear Manufacturers Association, 1969.

Cita MLA (9a ed.)

Dudley, Darle W. The Evolution of the Gear Art. American Gear Manufacturers Association, 1969.