Cita APA (7a ed.)
Coe, W. R. (1959). Piedras Negras Archaeology: Artifacts, Caches, and Burials. University of Pennsylvania, University Museum.
Cita estilo Chicago (17a ed.)
Coe, William R. Piedras Negras Archaeology: Artifacts, Caches, and Burials. Filadelfia, EUA: University of Pennsylvania, University Museum, 1959.
Cita MLA (9a ed.)
Coe, William R. Piedras Negras Archaeology: Artifacts, Caches, and Burials. University of Pennsylvania, University Museum, 1959.
Precaución: Estas citas no son 100% exactas.