Waldie, E. (2002). Triumph of the challenged: Conversations with especially able people. Purple Field Press.
Chicago-referens (17:e uppl.)Waldie, Elspeth. Triumph of the Challenged: Conversations with Especially Able People. Ilminster: Purple Field Press, 2002.
MLA-referens (8:e uppl.)Waldie, Elspeth. Triumph of the Challenged: Conversations with Especially Able People. Purple Field Press, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.