Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://www.cambridge.org/core/books/care-of-books/FC10209EBD28703E274EBBFC9FFAA304
https://www.amazon.es/Care-Books-John-Willis-Clark/dp/1340279916
http://www.gutenberg.org/ebooks/26378