Cita APA

National Research Council (Estados Unidos). Committee on Tropical Soils, National Research Council (Estados Unidos). Committee on Tropical Soils, National Research Council (Estados Unidos), & National Research Council (Estados Unidos). (1972). Soils of the humid tropics. Washington: National Academy of Sciences.

Citación estilo Chicago

National Research Council (Estados Unidos). Committee on Tropical Soils, National Research Council (Estados Unidos). Committee on Tropical Soils, National Research Council (Estados Unidos), y National Research Council (Estados Unidos). Soils of the Humid Tropics. Washington: National Academy of Sciences, 1972.

Cita MLA

National Research Council (Estados Unidos). Committee on Tropical Soils, National Research Council (Estados Unidos). Committee on Tropical Soils, National Research Council (Estados Unidos), y National Research Council (Estados Unidos). Soils of the Humid Tropics. Washington: National Academy of Sciences, 1972.