United States. Committee on Ecological Research. (1975). The role of ecology in the Federal Government: Report of the Committee on Ecological Research. Council on Environmental Quality : for sale by the Supt. of Docs., U.S. Govt. Print. Off..
Citace podle Chicago (17th ed.)United States. Committee on Ecological Research. The Role of Ecology in the Federal Government: Report of the Committee on Ecological Research. Washington: Council on Environmental Quality : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975.
Citace podle MLA (8th ed.)United States. Committee on Ecological Research. The Role of Ecology in the Federal Government: Report of the Committee on Ecological Research. Council on Environmental Quality : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975.