APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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