Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://nl.wikipedia.org/wiki/Burgerzaalkerk
https://www.tripadvisor.ru/LocationPhotoDirectLink-g187309-d2511653-i117593041-Burgersaalkirche-Munich_Upper_Bavaria_Bavaria.html
http://www.wikiwand.com/en/Bürgersaalkirche
http://www.theodor-frey.de/IGNAZ%20GUENTHER.htm
https://commons.wikimedia.org/wiki/File:München,_Bürgersaalkirche_(01).jpg
https://muniqueando.com/2013/03/15/burgersaalkirche/
http://www.flickriver.com/photos/26095468@N04/sets/72157608768326775/
https://www.flickr.com/photos/26095468@N04/sets/72157608768326775/
Mariano Ruiz de Ael
https://www.pinterest.co.uk/kaninacox/father-rupert-mayer/
https://commons.wikimedia.org/wiki/File:München_-_Bürgersaal_(Schild).JPG