Sec. de: Prêmio Johnnie Walker de Artes Plásticas, 1977 [efêmeros]. [1977?]

http://www.johnniewalker.com/JWWebApp/resources/jsp/begin.do?pageId=F3 (13/08/2004)

http://www.nls.uk 18/07/2005

LC authorities 18/07/2005