APA (7th ed.) Citation

Platt, N., & Drummond, M. J. (1971). Our world through the ages (3d ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Platt, Nathaniel, and Muriel Jean Drummond. Our World Through the Ages. 3d ed. Englewood Cliffs, N. J: Prentice-Hall, 1971.

MLA (9th ed.) Citation

Platt, Nathaniel, and Muriel Jean Drummond. Our World Through the Ages. 3d ed. Prentice-Hall, 1971.