Cita APA (7a ed.)

Corbett, P. S. a., Janssen, V. a., & Lund, J. M. (2015). U.S. History. OpenStax.

Cita Chicago Style (17a ed.)

Corbett, P. Scott author, Volker author Janssen, y John M. Lund. U.S. History. [Place of publication not identified]: OpenStax, 2015.

Cita MLA (9a ed.)

Corbett, P. Scott author, et al. U.S. History. OpenStax, 2015.