Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://www.telecable.es/personales/angel1/arqbar/bernini/scala.htm
http://act.art.queensu.ca/details.php?i=3341
http://www.abbeville.com/interiors.asp?ISBN=0789201151&CaptionNumber=04
http://byricardomarcenaroi.blogspot.com.es/2011/04/architecture-arquitectura-gian-lorenzo.html
http://orbiscatholicussecundus.blogspot.com.es/2010/08/scala-regia-royal-staircase-of.html
http://www.br.de/fernsehen/bayerisches-fernsehen/sendungen/lido/gian-lorenzo-bernini-140~_image-11_-d8af8802aa272e784ccdcdf8735458f35f98bdb8.html
http://commons.wikimedia.org/wiki/File:Roma_Vatican_Scala_Regia_c1835.jpg
http://alchemioninfea.altervista.org/bernini.htm
http://www.adevaherranz.es/Arte/UNIVERSAL/EDAD%20MODERNA/Paises/Italia/ITALIA%20BARROCO%201/Art%20Arq%20XVII%20Bernini%20Scala%20Regia%20planta%20Vaticano.gif
http://2.bp.blogspot.com/-CUpfkuzCciM/UyijX2dmh-I/AAAAAAAACGI/lT0BwR-BGIA/s1600/Art+Arq+XVII+Bernini+Scala+Regia+Vaticano.gif
https://www.epdlp.com/edificio.php?id=64
http://arte-historia.com/barroco-elementos-de-su-arquitectura