Lua APA (7ú heag.)
Lowe, G. W. (1975). The early preclassic barra phase of Altamira, Chiapas: A review with new data. New World Archaeological Foundation.
Lua i Stíl Chicago (17ú heag.)
Lowe, Gareth W. The Early Preclassic Barra Phase of Altamira, Chiapas: A Review with New Data. Provo, Utah: New World Archaeological Foundation, 1975.
Lua MLA (9ú heag.)
Lowe, Gareth W. The Early Preclassic Barra Phase of Altamira, Chiapas: A Review with New Data. New World Archaeological Foundation, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.