APA (7th ed.) Citation

Diehl, R. A. (2004). The Olmecs: America's first civilization. Thames and Hudson.

Chicago Style (17th ed.) Citation

Diehl, Richard A. The Olmecs: America's First Civilization. London: Thames and Hudson, 2004.

MLA (9th ed.) Citation

Diehl, Richard A. The Olmecs: America's First Civilization. Thames and Hudson, 2004.