National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), & ebrary, Inc. (1999). Annual report. National Academy Press.
Čikaški stil citiranja (17. izdanje)National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), i Inc ebrary. Annual Report. Washington, D.C.: National Academy Press, 1999.
MLA način citiranja (9. izdanje)National Research Council (U.S.). Space Studies Board, et al. Annual Report. National Academy Press, 1999.
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