APA (7th ed.) Citation

Kramer, S. N. (1970). The Sumerians<sup>4</sup>.

Chicago Style (17th ed.) Citation

Kramer, S. N. The Sumerians<sup>4</sup>. 1970.

MLA (8th ed.) Citation

Kramer, S. N. The Sumerians<sup>4</sup>. 1970.

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