Não informado. (2022). Historic Preservation News. National Trust for Historic Preservation.
Chicago-referens (17:e uppl.)Não informado. Historic Preservation News. Washington: National Trust for Historic Preservation, 2022.
MLA-referens (8:e uppl.)Não informado. Historic Preservation News. National Trust for Historic Preservation, 2022.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.