Sec. de: Morgan, Matthew. Lobisomem versus dragão. 2009: (p. r.: ilustrador)

LC authorities 22/09/10: (ref.)

http://catalogue.bnf.fr/ 22/09/10: (Duddlebug; nasceu na Grã-Bretanha )

http://catalogue.bl.uk/ 22/09/10

http://www.wikipedia.org/ 22/09/10