Comprehensive plan for the national capital :
parks, open space and natural features /
National Capital Planning Commission.

APA Citation

United States. National Capital Planning Commission. (1983). Comprehensive plan for the national capital: parks, open space and natural features. Washington, D.C.: The Commission.

MLA Citation

United States. National Capital Planning Commission. Comprehensive Plan for the National Capital: Parks, Open Space And Natural Features. Washington, D.C.: The Commission, 1983.

Warning: These citations may not always be complete (especially for serials).