Não informado. (1930). Review of Scientific Instruments. American Institute of Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Review of Scientific Instruments. Rochester, NY: American Institute of Physics, 1930.
Lua MLA (8ú heag.)Não informado. Review of Scientific Instruments. American Institute of Physics, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.