National Research Council (U.S.). Committee on the Future of the Global Positioning System & National Research Council (U.S.). Commission on Engineering and Technical Systems. (1995). The Global Positioning System: A shared national asset : recommendations for technical improvements and enhancements. National Academy Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)National Research Council (U.S.). Committee on the Future of the Global Positioning System và National Research Council (U.S.). Commission on Engineering and Technical Systems. The Global Positioning System: A Shared National Asset : Recommendations for Technical Improvements and Enhancements. Washington, D.C.: National Academy Press, 1995.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)National Research Council (U.S.). Committee on the Future of the Global Positioning System và National Research Council (U.S.). Commission on Engineering and Technical Systems. The Global Positioning System: A Shared National Asset : Recommendations for Technical Improvements and Enhancements. National Academy Press, 1995.