Johnson-Freese, J. (2009). Heavenly ambitions: America's quest to dominate space. University of Pennsylvania Press.
Chicago Style (17th ed.) CitationJohnson-Freese, Joan. Heavenly Ambitions: America's Quest to Dominate Space. Philadelphia: University of Pennsylvania Press, 2009.
MLA引文Johnson-Freese, Joan. Heavenly Ambitions: America's Quest to Dominate Space. University of Pennsylvania Press, 2009.
警告:這些引文格式不一定是100%准確.