Mueller, C. G., & Rudolf, M. (1966). Light and vision. Time-Life Books.
Lua i Stíl Chicago (17ú heag.)Mueller, Conrad George, agus Mae Rudolf. Light and Vision. New York: Time-Life Books, 1966.
Lua MLA (9ú heag.)Mueller, Conrad George, agus Mae Rudolf. Light and Vision. Time-Life Books, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.