Bibliographic reference(s)

pp.78-80, no.23; p.205, no.291 (Joannides 1983 : Joannides, P., 1983. The Drawings of Raphael, with a complete catalogue, Oxford)

pp.276-7, no.100 (entry by Carol Plazzotta) (Chapman/Plazzotta/Henry 2004 : Chapman, H, Plazzotta, C, Henry, T. Raphael. From Urbino to Rome. London, 2004)

pp.104-6, under no.71; p.106, no.71/I.1 (Capellen 2008 : Capellen, JM, 2008. Raphael : the paintings. Volume 3, The Roman Portraits ca.1508-1520)