Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://collections.ed.ac.uk/art/search/*:*/Artist:%22david+martin%7C%7C%7CDavid+Martin%22
http://es.wikipedia.org/wiki/Hugh_Blair
https://austensmansfield.wordpress.com/tag/hugh-blair/
http://www.quotecollection.com/author/hugh-blair/