Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
INTERNET http://chagalov.tumblr.com/post/1621977833/iwao-yamawaki-self-portrait-1930-1932
INTERNET http://www.arcadja.com/auctions/de/yamawaki_iwao/kunstler/79732/
INTERNET https://lacelia.wordpress.com/category/fotografia/