ISBN 978-1580463805. Rohmer, Martin. Theatre and Performance in Zimbabwe. Bayreuth University. 1999: 49. ISBN 3927510548. Lessem, Ronnie. Integral Community:
(原始内容存档于3 November 2012) –通过Canada.com. Midgette, Anne. Gudrun Wagner, of Bayreuth Festival, Dies at 63. The New York Times. 29 November 2007 [26 January