Não informado. (1949). Historic preservation. National Trust for Historic Preservation.
Style de citation Chicago (17e éd.)Não informado. Historic Preservation. Washington: National Trust for Historic Preservation, 1949.
Style de citation MLA (8e éd.)Não informado. Historic Preservation. National Trust for Historic Preservation, 1949.
Attention : ces citations peuvent ne pas être correctes à 100%.