National Research Council (U.S.). Committee on Agricultural Land Use and Wildlife Resources & United States. Department of Agriculture. (1970). Land use and wildlife resources. National Academy of Sciences.
Cita Chicago (17th ed.)National Research Council (U.S.). Committee on Agricultural Land Use and Wildlife Resources i United States. Department of Agriculture. Land Use and Wildlife Resources. Washington: National Academy of Sciences, 1970.
Cita MLA (9th ed.)National Research Council (U.S.). Committee on Agricultural Land Use and Wildlife Resources i United States. Department of Agriculture. Land Use and Wildlife Resources. National Academy of Sciences, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.