Cita APA (7a ed.)

Todd, L. P., & Curti, M. E. (1950). America's history. Harcourt, Brace.

Cita Chicago Style (17a ed.)

Todd, Lewis Paul, y Merle Eugene Curti. America's History. New York: Harcourt, Brace, 1950.

Cita MLA (9a ed.)

Todd, Lewis Paul, y Merle Eugene Curti. America's History. Harcourt, Brace, 1950.