Schmitz, E. (2004). Sigmar Polke: "Recent Paintings and Drawings 1998 - 2002" ; Dallas Museum of Art, 15.11.2002 - 6.4.2003 ; "History of Everything" ; Tate Modern, London, 2.10.2003 - 4.1.2004. Kunstforum.
Chicago-referens (17:e uppl.)Schmitz, Edgar. "Sigmar Polke: "Recent Paintings and Drawings 1998 - 2002" ; Dallas Museum of Art, 15.11.2002 - 6.4.2003 ; "History of Everything" ; Tate Modern, London, 2.10.2003 - 4.1.2004." Kunstforum 2004.
MLA-referens (8:e uppl.)Schmitz, Edgar. "Sigmar Polke: "Recent Paintings and Drawings 1998 - 2002" ; Dallas Museum of Art, 15.11.2002 - 6.4.2003 ; "History of Everything" ; Tate Modern, London, 2.10.2003 - 4.1.2004." Kunstforum, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.