http://es.wikipedia.org/wiki/Heather_Begg

WWW groveonline, 2011---(Begg, Heather; n. Nelson (Nueva Zelanda), 1 diciembre 1932; mezzosoprano)

WWW Daily Telegraph, 20-5-2009---(Isoleen Heather Begg was born at Nelson, New Zealand 1 Dic 1932, who has died aged 76; mezzo-soprano)