Cita APA (7a ed.)

Platt, N., & Drummond, M. J. (1954). Our world through the ages. Prentice Hall.

Cita Chicago Style (17a ed.)

Platt, Nathaniel, y Muriel Jean Drummond. Our World Through the Ages. New York: Prentice Hall, 1954.

Cita MLA (9a ed.)

Platt, Nathaniel, y Muriel Jean Drummond. Our World Through the Ages. Prentice Hall, 1954.