GRIFFITHS, T. R. W. (1991). Bloomsbury theatre guide: :the comprehensive guide to who's who and what's what in theatre today. Bloomsbury Publishers.
Chicago-referens (17:e uppl.)GRIFFITHS, Trevor R. WODDIS. Bloomsbury Theatre Guide: :the Comprehensive Guide to Who's Who and What's What in Theatre Today. Bloomsbury Publishers, 1991.
MLA-referens (9:e uppl.)GRIFFITHS, Trevor R. WODDIS. Bloomsbury Theatre Guide: :the Comprehensive Guide to Who's Who and What's What in Theatre Today. Bloomsbury Publishers, 1991.
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