Marco Ferreri - Wikipedia
Marco Ferreri - IMDB
Irriverente Ferreri - A documentary on Ferreri by Maite Carpio (RAI - in Italian)
The Cinefiles at the Pacific Film Archive, Berkeley - A gem for Ferreri enthusiasts. Plenty of materials, press kits,  film reviews and short essays (search for Ferreri, Marco)
Ferreri Retrospective - Institute Francais (UK)