Hoover, R. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Citazione stile Chigago Style (17a edizione)Hoover, Richard. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Citatione MLA (9a ed.)Hoover, Richard. Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms. SPIE Digital Library.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.