J. Kirby, ‘The Painter’s Trade in the Seventeenth Century: Theory and Practice’, National Gallery Technical Bulletin, 20, 1999, pp. 5-49. http://www.nationalgallery.org.uk/technical-bulletin/kirby1999.
J. Kirby, ‘The Painter’s Trade in the Seventeenth Century: Theory and Practice’, National Gallery Technical Bulletin, 20, 1999, pp. 5-49. http://www.nationalgallery.org.uk/technical-bulletin/kirby1999.