Não informado. (2022). Historic Preservation News. National Trust for Historic Preservation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Historic Preservation News. Washington: National Trust for Historic Preservation, 2022.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Historic Preservation News. National Trust for Historic Preservation, 2022.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.