APA (7th ed.) Citation

Clark, J. E., & Nelson, F. W. (1988). The lithic artifacts of La Libertad, Chiapas, Mexico: An economic perspective. New World Archaeological Foundation.

Chicago Style (17th ed.) Citation

Clark, John E., and Fred W. Nelson. The Lithic Artifacts of La Libertad, Chiapas, Mexico: An Economic Perspective. Provo, Utah: New World Archaeological Foundation, 1988.

MLA (9th ed.) Citation

Clark, John E., and Fred W. Nelson. The Lithic Artifacts of La Libertad, Chiapas, Mexico: An Economic Perspective. New World Archaeological Foundation, 1988.