Lua APA (7ú heag.)
Gordon, G. B. (1905). The serpent motive in the ancient art of Central America and Mexico. [No identificado].
Lua i Stíl Chicago (17ú heag.)
Gordon, George Byron. The Serpent Motive in the Ancient Art of Central America and Mexico. [No identificado]: [No identificado], 1905.
Lua MLA (9ú heag.)
Gordon, George Byron. The Serpent Motive in the Ancient Art of Central America and Mexico. [No identificado], 1905.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.