Discovery Channel (Firm), Discovery Communications, Inc, Discovery Networks, Cronkie Ward Company, Malone, A., Sutherland, D., . . . MacLowry, R. (1997). Galileo's dialogue. Discovery Communications.
Chicago-referens (17:e uppl.)Discovery Channel (Firm), et al. Galileo's Dialogue. Bethesda, Md: Discovery Communications, 1997.
MLA-referens (9:e uppl.)Discovery Channel (Firm), et al. Galileo's Dialogue. Discovery Communications, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.