APA (7th ed.) Citation

Crawford, H. (1991). Sumer and the Sumerians.

Chicago Style (17th ed.) Citation

Crawford, Harriet. Sumer and the Sumerians. Cambridge, 1991.

MLA (8th ed.) Citation

Crawford, Harriet. Sumer and the Sumerians. 1991.

Warning: These citations may not always be 100% accurate.