APA (7th ed.) Zitazioa

Johnson-Freese, J. (2009). Heavenly ambitions: America's quest to dominate space. University of Pennsylvania Press.

Chicago Style (17th ed.) Zitazioa

Johnson-Freese, Joan. Heavenly Ambitions: America's Quest to Dominate Space. Philadelphia: University of Pennsylvania Press, 2009.

MLA (9th ed.) Zitazioa

Johnson-Freese, Joan. Heavenly Ambitions: America's Quest to Dominate Space. University of Pennsylvania Press, 2009.