Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://aplust.net/blog/ignazio_gardella_housing_for_borsalino_employees_alessandria_0/
http://arxiubak.blogspot.com/2014/02/edificio-residencial-borsalino-ignazio.html
https://upcommons.upc.edu/bitstream/handle/2099/12119/06_DPA25_AM_Reflexion%20sobre%20la%20casa_Article-Col-P.pdf?sequence=1
https://www.atlantearchitetture.beniculturali.it/case-per-impiegati-della-borsalino/
http://www.scalarchives.it/web/dettaglio_immagine.asp?idImmagine=0098961&posizione=1&numImmagini=1&prmset=on&ANDOR=and&xesearch=0098961&ricerca_s=0098961&SC_PROV=RR&SC_Lang=ita&Sort=8
https://www.pinterest.com.au/pin/398498267013461136/?nic_v1=1aFys0TOJTH%2BgymwyPkcBFbIEXAx8XM%2B7exZDEWIOXovL%2F5pA1AH4xx2%2BhAz6Aq3dB
https://aplust.net/viewer_preview/10_Historias_preview_New/index_20.html#page=13