Citazione Stile APA (7a Edizione)

Crawford, H. E. W. (2004). Sumer and the Sumerians (2nd ed.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Crawford, Harriet E. W. Sumer and the Sumerians. 2nd ed. Cambridge, UK ; New York: Cambridge University Press, 2004.

Citatione MLA (8a ed.)

Crawford, Harriet E. W. Sumer and the Sumerians. 2nd ed. Cambridge University Press, 2004.