Cita APA (7a ed.)

Brown, P. R., & Porter, R. M. (2015). Gears, Pregears and Related Domains.

Cita Chicago Style (17a ed.)

Brown, Philip R., y R. Michael Porter. Gears, Pregears and Related Domains. 2015.

Cita MLA (9a ed.)

Brown, Philip R., y R. Michael Porter. Gears, Pregears and Related Domains. 2015.