Heiser, J. (2007). Documenta: Roger M. Bruegel and Ruth Noack's much-anticipated documenta 12 opened to strong criticism. frieze.
Chicago-referens (17:e uppl.)Heiser, Jörg. "Documenta: Roger M. Bruegel and Ruth Noack's Much-anticipated Documenta 12 Opened to Strong Criticism." Frieze 2007.
MLA-referens (8:e uppl.)Heiser, Jörg. "Documenta: Roger M. Bruegel and Ruth Noack's Much-anticipated Documenta 12 Opened to Strong Criticism." Frieze, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.