GRA (编). Carta Regional das Obras Públicas 2013 – 2016(PDF). Ponta Delgada (Azores), Portugal: Regional Government of the Azores: 12/15. June 2013 [2020-08-09]. (原始内容存档(PDF)于2016-03-03) (葡萄牙语).
web.archive.org
GRA (编). Carta Regional das Obras Públicas 2013 – 2016(PDF). Ponta Delgada (Azores), Portugal: Regional Government of the Azores: 12/15. June 2013 [2020-08-09]. (原始内容存档(PDF)于2016-03-03) (葡萄牙语).