Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
INTERNET http://www.filmapia.com/published/places/alberobello-trulli
INTERNET http://www.agliantichitrulli.com/gallery.php
INTERNET http://www.flickriver.com/places/Italy/Puglia/Alberobello/
INTERNET http://www.italyis.com/puglia/ars_hist/trulli/origini.html
INTERNET http://cae2k.com/db-photos-0/trulli-alberobello.html
INTERNET http://archinect.com/forum/thread/78052/circular-houses
http://www.shutterstock.com/pic-25505050/stock-photo-trulli-house-in-alberobello-puglia-italy.html INTERNET