Wagner, Richard. 1849/1895. “The Art-Work of the Future.” Teoksessa Prose Works, osa 1. Kääntänyt William Ashton Ellis. S.l., 69–213. The Wagner Library, http://users.belgacom.net/wagnerlibrary/prose/wagartfut.htm [haettu 21.7.2005].
Wagner, Richard. 1849/1895. “The Art-Work of the Future.” Teoksessa Prose Works, osa 1. Kääntänyt William Ashton Ellis. S.l., 69–213. The Wagner Library, http://users.belgacom.net/wagnerlibrary/prose/wagartfut.htm [haettu 21.7.2005].