Duncan Bull, Classic ground : British artists and the landscape of Italy, 1740-1830, , Yale Center for British Art, New Haven, 1981, p. 52, no. 71, ND1354.4 B85 (YCBA)Windows on that world, essays on British art presented to Brian Allen , The Paul Mellon Centre for Studies in British Art, London, 2012, pp. 144, 153,154-55, 156, fig. 84, N6766 .W56 2012 (YCBA)