Citazione Stile APA (7a Edizione)

Platt, N., & Drummond, M. J. (1955). Our world through the ages (2. printing.). Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Platt, Nathaniel, e Muriel Jean Drummond. Our World Through the Ages. 2. printing. New York: Prentice Hall, 1955.

Citatione MLA (9a ed.)

Platt, Nathaniel, e Muriel Jean Drummond. Our World Through the Ages. 2. printing. Prentice Hall, 1955.