APA (7th ed.) Citation

Mayer, S., & Schmandt-Besserat, D. (1975). Sumer. The Story of the First Civilization.

Chicago Style (17th ed.) Citation

Mayer, Susan, and Denise Schmandt-Besserat. Sumer. The Story of the First Civilization. 1975.

MLA (8th ed.) Citation

Mayer, Susan, and Denise Schmandt-Besserat. Sumer. The Story of the First Civilization. 1975.

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