APA (7th ed.) Zitazioa
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.
Chicago Style (17th ed.) Zitazioa
Sharer, Robert J., eta 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.
MLA (9th ed.) Zitazioa
Sharer, Robert J., eta Bruce A. Anderson. The Prehistory of Chalchuapa, El Salvador: Volume One : Introduction, Surface Surveys, Excavations, Monuments and Special Deposits. University of Pennsylvania, University Museum.
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