Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://catalogue.drouot.com/images/perso/phare/LOT/79/9037/87.jpg
https://en.wikipedia.org/wiki/Marc-Antoine_Laugier#/media/File:Essai_sur_l%27Architecture_-_Frontispiece.jpg
http://ruartecontract.com/wp-content/uploads/2013/04/essai-arquitecture-laugier.jpg