Cita APA (7a ed.)
Sharer, R. J., & Anderson, B. A. The Prehistory of Chalchuapa, El Salvador: Volume One : Introduction, Surface Surveys, Excavations, Monuments and Special Deposits. University of Pennsylvania, University Museum.
Cita estilo Chicago (17a ed.)
Sharer, Robert J., y Bruce A. Anderson. The Prehistory of Chalchuapa, El Salvador: Volume One : Introduction, Surface Surveys, Excavations, Monuments and Special Deposits. Filadelfia, EUA: University of Pennsylvania, University Museum.
Cita MLA (9a ed.)
Sharer, Robert J., y Bruce A. Anderson. The Prehistory of Chalchuapa, El Salvador: Volume One : Introduction, Surface Surveys, Excavations, Monuments and Special Deposits. University of Pennsylvania, University Museum.
Precaución: Estas citas no son 100% exactas.