Cita APA

British standard 436: 1940. (1940). Specification for machine out gears: A. Helical and straight spur. British standards institution.

Citación estilo Chicago

British standard 436: 1940. Specification for Machine Out Gears: A. Helical and Straight Spur. London: British standards institution, 1940.

Cita MLA

British standard 436: 1940. Specification for Machine Out Gears: A. Helical and Straight Spur. London: British standards institution, 1940.