Cita APA (7a ed.)

Yarbrough, W., Bruner, C. V., & Hancox, H. F. (1943). A history of the United States for High Schools: A modified unit plan. Laidlaw.

Cita Chicago Style (17a ed.)

Yarbrough, William, Clarence Vernon Bruner, y Herbert French Hancox. A History of the United States for High Schools: A Modified Unit Plan. Chicago [u.a.]: Laidlaw, 1943.

Cita MLA (9a ed.)

Yarbrough, William, et al. A History of the United States for High Schools: A Modified Unit Plan. Laidlaw, 1943.