Cita APA (7a ed.)

Shafer, B. C., McLemore, R. A., & Augspurger, E. (1966). United States history: For High Schools. Laidlaw.

Cita Chicago Style (17a ed.)

Shafer, Boyd C., Richard Aubrey McLemore, y Everett Augspurger. United States History: For High Schools. River Forest, Ill. [u.a.]: Laidlaw, 1966.

Cita MLA (9a ed.)

Shafer, Boyd C., et al. United States History: For High Schools. Laidlaw, 1966.