O'Donnell, Oliver Kunsthistorisches Institut in Florenz, MPI, Max Planck Society;
http://caa.tandfonline.com/doi/abs/10.1080/02666286.2016.1230698#.Wmn_Z8ty59A (Verlagsversion)
O'Donnell, O. (2017). Depicting Berkeleyan Idealism: a study of two portraits by John Smibert. Word & image: a journal of verbal visual enquiry, 33(1), 18-34.