Cita APA (7a ed.)

Downey, M. T., Giese, J. R., & Metcalf, F. D. (1997). United States history: In the course of human events. West Publ.

Cita Chicago Style (17a ed.)

Downey, Matthew T., James R. Giese, y Fay D. Metcalf. United States History: In the Course of Human Events. St. Paul, Minn. [u.a.]: West Publ, 1997.

Cita MLA (9a ed.)

Downey, Matthew T., et al. United States History: In the Course of Human Events. West Publ, 1997.