Cita APA (7a ed.)

Parkman, F., & Guthrie, A. J. (1953). The Oregon trail (4th print.). The New American Library.

Cita Chicago Style (17a ed.)

Parkman, Francis, y A.B. Jr Guthrie. The Oregon Trail. 4th print. New York: The New American Library, 1953.

Cita MLA (9a ed.)

Parkman, Francis, y A.B. Jr Guthrie. The Oregon Trail. 4th print. The New American Library, 1953.