Cita APA (7a ed.)
Spence, M. (1971). Some Lithic Assemblages of Western Zacatecas and Durango, Mexico. Southern Illinois University.
Cita estilo Chicago (17a ed.)
Spence, Michael. Some Lithic Assemblages of Western Zacatecas and Durango, Mexico. Carbondale, EUA: Southern Illinois University, 1971.
Cita MLA (9a ed.)
Spence, Michael. Some Lithic Assemblages of Western Zacatecas and Durango, Mexico. Southern Illinois University, 1971.
Precaución: Estas citas no son 100% exactas.