Comprehensive plan for the national capital :
sketch plan study report, background studies.

APA Citation

United States. National Capital Planning Commission. (1979). Comprehensive plan for the national capital: sketch plan study report, background studies. [Washington, D.C.: National Capital Planning Commission.

MLA Citation

United States. National Capital Planning Commission. Comprehensive Plan for the National Capital: Sketch Plan Study Report, Background Studies. [Washington, D.C.: National Capital Planning Commission, 1979.

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