National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), & ebrary, Inc. (1999). Annual report. National Academy Press.
芝加哥风格引文National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), 与 Inc ebrary. Annual Report. Washington, D.C.: National Academy Press, 1999.
MLA引文National Research Council (U.S.). Space Studies Board, et al. Annual Report. National Academy Press, 1999.
警告：这些引文格式不一定是100％准确.