Não informado. (1959). Optics and Spectroscopy. American Institute of Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Optics and Spectroscopy. Concord, Mass: American Institute of Physics, 1959.
Lua MLA (8ú heag.)Não informado. Optics and Spectroscopy. American Institute of Physics, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.