Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
INTERNET http://books.google.com/books?id=wMZPAAAAMAAJ&printsec=frontcover&img=1&zoom=1&imgtk=AFLRE72EBthqBK9j2fy4ITY0GqrBXvCBDNNSqphRXZEALPMz4In_Dze1oKDgvFnf7F5lyo7OykSebyOh10ygwKVoCxtJQaAotOXbSc_SBUKhQF_0luEgXGs
INTERNET http://ecx.images-amazon.com/images/I/519I6kP0NOL._SX258_BO1,204,203,200_.jpg