Kinsella, Sophie. Confessions of a shopaholic, 2001 CIP t.p. (Sophie Kinsella)
Email from CaAE, April 10, 2003 (Guardian Unlimited, Bookseller section, Mar. 29, 2003 (Producing different kinds of work under different names is a popular trick ... and is paying off handsomely for Madeleine Wickham, who, as Sophie Kinsella, sits on top of the bestseller list by a clear margin this week; Wickham has published seven novels under her own name; four Sophie Kinsella novels)