Packard, V. O. (1962). The pyramid climbers. Faucett.
Lua i Stíl Chicago (17ú heag.)Packard, Vance Oakley. The Pyramid Climbers. Greenwich, Conn: Faucett, 1962.
Lua MLA (9ú heag.)Packard, Vance Oakley. The Pyramid Climbers. Faucett, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.