Não informado. (1971). JPL quarterly technical review. California Institute of Technology, Jet Propulsion Laboratory.
Lua i Stíl Chicago (17ú heag.)Não informado. JPL Quarterly Technical Review. Pasadena, Calif: California Institute of Technology, Jet Propulsion Laboratory, 1971.
Lua MLA (8ú heag.)Não informado. JPL Quarterly Technical Review. California Institute of Technology, Jet Propulsion Laboratory, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.