APA (7th ed.) Citation

Yoffee, N., & Cowgill, G. L. (1988). The Collapse of ancient states and civilizations. University of Arizona Press.

Chicago Style (17th ed.) Citation

Yoffee, Norman, and George L. Cowgill. The Collapse of Ancient States and Civilizations. Tucson: University of Arizona Press, 1988.

MLA (8th ed.) Citation

Yoffee, Norman, and George L. Cowgill. The Collapse of Ancient States and Civilizations. University of Arizona Press, 1988.