IGESPAR, ed. (2011), Castelo do Amieira (do Tejo) (in Portuguese), Lisbon, Portugal: IGESPAR - Instituto Gestão do Patrimonio Arquitectónico e Arqueológico, archived from the original on 17 March 2012, retrieved 4 August 2011
web.archive.org
IGESPAR, ed. (2011), Castelo do Amieira (do Tejo) (in Portuguese), Lisbon, Portugal: IGESPAR - Instituto Gestão do Patrimonio Arquitectónico e Arqueológico, archived from the original on 17 March 2012, retrieved 4 August 2011