National Research Council (U.S.). Committee on Space Shuttle Upgrades & ebrary, Inc. (1999). Upgrading the space shuttle. National Academy Press.
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Chicago-čujuhus (17. p.)
National Research Council (U.S.). Committee on Space Shuttle Upgrades juo Inc ebrary. Upgrading the Space Shuttle. Washington, D.C.: National Academy Press, 1999.
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MLA-čujuhus (9. p.)
National Research Council (U.S.). Committee on Space Shuttle Upgrades juo Inc ebrary. Upgrading the Space Shuttle. National Academy Press, 1999.
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