National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Dept. of Economics, Finance and Administration, National Research Council (U.S.). Highway Research Board. Dept. of Urban Transportation Planning, & National Research Council (U.S.). Highway Research Board. Dept. of Soils, Geology and Foundations. (1969). Planning: Conservation of the physical environment ; 5 reports. National Academy of Science - National Research Council.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)National Research Council (U.S.). Highway Research Board, Finance and Administration National Research Council (U.S.). Highway Research Board. Dept. of Economics, National Research Council (U.S.). Highway Research Board. Dept. of Urban Transportation Planning, và Geology and Foundations National Research Council (U.S.). Highway Research Board. Dept. of Soils. Planning: Conservation of the Physical Environment ; 5 Reports. Washington, D.C: National Academy of Science - National Research Council, 1969.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)National Research Council (U.S.). Highway Research Board, et al. Planning: Conservation of the Physical Environment ; 5 Reports. National Academy of Science - National Research Council, 1969.