Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://www.bluffton.edu/%5C~sullivanm/england/london/nash/arcade.html
http://www.pexhurst.co.uk/royal_opera_arcade.php
http://www.peterdaleltd.com/
http://www.victorianweb.org/art/architecture/london/35.html
http://www.pallmallstationers.co.uk/history.htm
http://www.british-history.ac.uk/report.aspx?compid=40670