Sotheby Parke Bernet Group. (1981). Important old master paintings - April 1981. Sotheby.
Chicago Edition CitationSotheby Parke Bernet Group. Important Old Master Paintings - April 1981. London: Sotheby, 1981.
MLA Edition CitationSotheby Parke Bernet Group. Important Old Master Paintings - April 1981. Sotheby, 1981.
Warning: These citations may not always be 100% accurate.