APA (7th ed.) Citation

Spence, M. W. (1971). Some lithic assemblages of Western Zacatecas and Durango, Mexico. University Museum, Southern Illinois University.

Chicago Style (17th ed.) Citation

Spence, Michael W. Some Lithic Assemblages of Western Zacatecas and Durango, Mexico. Carbondale: University Museum, Southern Illinois University, 1971.

MLA (9th ed.) Citation

Spence, Michael W. Some Lithic Assemblages of Western Zacatecas and Durango, Mexico. University Museum, Southern Illinois University, 1971.