National Research Council (U.S.). Transportation Research Board & National Cooperative Highway Research Program. (1992). NCHRP supports advances in differential GPS satellite surveying. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)National Research Council (U.S.). Transportation Research Board i National Cooperative Highway Research Program. NCHRP Supports Advances in Differential GPS Satellite Surveying. Washington, D.C: Transportation Research Board, National Research Council, 1992.
Cita MLA (9th ed.)National Research Council (U.S.). Transportation Research Board i National Cooperative Highway Research Program. NCHRP Supports Advances in Differential GPS Satellite Surveying. Transportation Research Board, National Research Council, 1992.