Mary Crawford Volk; Kubler, George (1987-03-01). "Building the Escorial". The Art Bulletin. The Art Bulletin, Vol. 69, No. 1. 69 (1): 150–153. doi:10.2307/3051093. JSTOR3051093.
jstor.org
Mary Crawford Volk; Kubler, George (1987-03-01). "Building the Escorial". The Art Bulletin. The Art Bulletin, Vol. 69, No. 1. 69 (1): 150–153. doi:10.2307/3051093. JSTOR3051093.