Cita APA (7a ed.)

Carls, N., Sorenson, F. E., & Howarth, M. D. (1962). Our United States in a World of Neighbors (rev. ed.). The John C. Winston Company.

Cita Chicago Style (17a ed.)

Carls, Norman, Frank E. Sorenson, y Margery D. Howarth. Our United States in a World of Neighbors. rev. ed. New York: The John C. Winston Company, 1962.

Cita MLA (9a ed.)

Carls, Norman, et al. Our United States in a World of Neighbors. rev. ed. The John C. Winston Company, 1962.