Citazione APA

Platt, N., & Drummond, M. J. (1967). Our world through the ages (3rd ed.). Prentice-Hall.

Stile di citazione Chicago

Platt, Nathaniel, e Muriel Jean Drummond. Our World Through the Ages. 3rd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1967.

Citazione MLA

Platt, Nathaniel, e Muriel Jean Drummond. Our World Through the Ages. 3rd ed. Prentice-Hall, 1967.