Lua APA (7ú heag.)
Stirling, M. W. (1955). Stone monuments of the Río Chiquito Veracruz, México. Smithsonian Institution, Bureau of American Ethnology.
Lua i Stíl Chicago (17ú heag.)
Stirling, Matthew Williams. Stone Monuments of the Río Chiquito Veracruz, México. Washington D. C.: Smithsonian Institution, Bureau of American Ethnology, 1955.
Lua MLA (9ú heag.)
Stirling, Matthew Williams. Stone Monuments of the Río Chiquito Veracruz, México. Smithsonian Institution, Bureau of American Ethnology, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.