North Virginia Regional Planning and Economic Development Commission. (1965). Roadside preservation of scenic, historic, natural areas. s.n.
Cita Chicago (17th ed.)North Virginia Regional Planning and Economic Development Commission. Roadside Preservation of Scenic, Historic, Natural Areas. Arlington, Va: s.n, 1965.
Cita MLA (9th ed.)North Virginia Regional Planning and Economic Development Commission. Roadside Preservation of Scenic, Historic, Natural Areas. s.n, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.