Coe, W. R. (1959). Piedras Negras archaeology: Artifacts, caches, and burials. University Museum, University of Pennsylvania.
Cita Chicago Style (17a ed.)Coe, William R. Piedras Negras Archaeology: Artifacts, Caches, and Burials. Philadelphia: University Museum, University of Pennsylvania, 1959.
Cita MLA (9a ed.)Coe, William R. Piedras Negras Archaeology: Artifacts, Caches, and Burials. University Museum, University of Pennsylvania, 1959.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.