American Society of Landscape Architects. (1932). Colonial gardens; the landscape architecture of George Washington's time. United States George Washington Bicentennial Commission.
Chicago-referens (17:e uppl.)American Society of Landscape Architects. Colonial Gardens; the Landscape Architecture of George Washington's Time. Washington, D.C: United States George Washington Bicentennial Commission, 1932.
MLA-referens (9:e uppl.)American Society of Landscape Architects. Colonial Gardens; the Landscape Architecture of George Washington's Time. United States George Washington Bicentennial Commission, 1932.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.