Diederichsen, D. (1997). Widows Speak: Diedrich Diederichsen on Heiner Müller. Artforum.
Chicago-referens (17:e uppl.)Diederichsen, Diedrich. "Widows Speak: Diedrich Diederichsen on Heiner Müller." Artforum 1997.
MLA-referens (8:e uppl.)Diederichsen, Diedrich. "Widows Speak: Diedrich Diederichsen on Heiner Müller." Artforum, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.