Irving Stone.„The Agony and the Ecstasy“ (en) 390. www.scribd.com. — „(…)All the marbles have to be fully clothed; they must go into dark niches where they will be seen only as rigid still lifes. How can I tie up three whole years of my life filling Bregno's highly decorated altar with more decorations?“. 2012-yil 7-avgustda asl nusxadan arxivlangan. Qaraldi: 24 червня 2012.
Irving Stone.„The Agony and the Ecstasy“ (en) 390. www.scribd.com. — „(…)All the marbles have to be fully clothed; they must go into dark niches where they will be seen only as rigid still lifes. How can I tie up three whole years of my life filling Bregno's highly decorated altar with more decorations?“. 2012-yil 7-avgustda asl nusxadan arxivlangan. Qaraldi: 24 червня 2012.