Lua APA (7ú heag.)
Green, D. F., & Lowe, G. W. (1967). Altamira and Padre Piedra, early preclassic sites in Chiapas, Mexico. New World Archaeological Foundation.
Lua i Stíl Chicago (17ú heag.)
Green, Dee F., agus Gareth W. Lowe. Altamira and Padre Piedra, Early Preclassic Sites in Chiapas, Mexico. Provo, Utah: New World Archaeological Foundation, 1967.
Lua MLA (9ú heag.)
Green, Dee F., agus Gareth W. Lowe. Altamira and Padre Piedra, Early Preclassic Sites in Chiapas, Mexico. New World Archaeological Foundation, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.