Hoover, R. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Lua i Stíl Chicago (17ú heag.)Hoover, Richard. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Lua MLA (9ú heag.)Hoover, Richard. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.