The official website of the Manoppello sanctuary
https://www.voltosanto.it/

Antonio Teseo's blog
http://osservazione.blogspot.com

Raymond Frost's blog
http://holyfaceofmanoppello.blogspot.com

Michael Sauer's website
http://www.volto-santo.com

Dr. Andreas Löhr's website
http://www.voltosanto.com

Manfred Prosch's website
http://www.sudariumchristi.com

Chiara Vigo's website
http://www.chiaravigo.it