Cita APA

National Research Council (Estados Unidos). Transportation Research Board, & National Research Council (Estados Unidos). Transportation Research Board. (1979). Conservacion de caminos sin pavimentar. Washington: National Academy of Sciences.

Citación estilo Chicago

National Research Council (Estados Unidos). Transportation Research Board, y National Research Council (Estados Unidos). Transportation Research Board. Conservacion De Caminos Sin Pavimentar. Washington: National Academy of Sciences, 1979.

Cita MLA

National Research Council (Estados Unidos). Transportation Research Board, y National Research Council (Estados Unidos). Transportation Research Board. Conservacion De Caminos Sin Pavimentar. Washington: National Academy of Sciences, 1979.