Goddard Space Flight Center. Operations Control Center & Smithsonian Astrophysical Observatory. Satellite situation report.
芝加哥风格引文Goddard Space Flight Center. Operations Control Center 与 Smithsonian Astrophysical Observatory. Satellite Situation Report. Greenbelt, Md.
MLA引文Goddard Space Flight Center. Operations Control Center 与 Smithsonian Astrophysical Observatory. Satellite Situation Report.
警告：这些引文格式不一定是100％准确.