Tolong jelaskan mengenai Bacaan tambahan dari Maria Magdalena Sedang Membaca

Campbell, Lorne. "The Materials and Technique of Five Paintings by Rogier van der Weyden and his Workshop". London: National Gallery Technical Bulletin, 18, 1997. 68–86

White, R. "Medium Analysis of Campin Group Paintings in the National Gallery" in Foister, Susan; Nash, Susie (eds). Robert Campin: New Directions in Scholarship. Antwerp: Turnhout, 1996. 71–76