Cita APA (7a ed.)

Boyd, L. A. (1997). The behavior of Przewalski's horses. University Microfilms International.

Cita Chicago Style (17a ed.)

Boyd, Lee Allen. The Behavior of Przewalski's Horses. Ann Arbor: University Microfilms International, 1997.

Cita MLA (9a ed.)

Boyd, Lee Allen. The Behavior of Przewalski's Horses. University Microfilms International, 1997.