Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
INTERNET http://bibliotecadearquitecto.blogspot.com.es/2008/07/vida-y-obras-de-walter-gropius.html
INTERNET http://www.todocoleccion.net/walter-gropius-bauhaus-giulio-carlo-argan-ed-gustavo-gili-1983~x32894355
INTERNET http://www.christies.com/lotfinder/books-manuscripts/argan-giulio-carlo-walter-gropius-e-la-5404358-details.aspx