Norlin, G., & Ellsworth, R. E. (1985). A voice from Colorado's past for the present: Selected writings of George Norlin. Colorado Associated University Press.
Lua i Stíl Chicago (17ú heag.)Norlin, George, agus Ralph E. Ellsworth. A Voice from Colorado's Past for the Present: Selected Writings of George Norlin. Boulder, Colo.: Colorado Associated University Press, 1985.
Lua MLA (8ú heag.)Norlin, George, agus Ralph E. Ellsworth. A Voice from Colorado's Past for the Present: Selected Writings of George Norlin. Colorado Associated University Press, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.