National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), & ebrary, Inc. (2004). Annual report 2003. National Academy Press.
Chicago-čujuhus (17. p.)National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), juo Inc ebrary. Annual Report 2003. Washington, D.C.: National Academy Press, 2004.
MLA-čujuhus (9. p.)National Research Council (U.S.). Space Studies Board, et al. Annual Report 2003. National Academy Press, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.