Platt, N., & Drummond, M. J. (1954). Our world through the ages. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Platt, Nathaniel, agus Muriel Jean Drummond. Our World Through the Ages. New York: Prentice-Hall, 1954.
Lua MLA (8ú heag.)Platt, Nathaniel, agus Muriel Jean Drummond. Our World Through the Ages. Prentice-Hall, 1954.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.