Zahm, O. (1990). Conceptual Art, A Perspective. Shifting Back And Forth Between. The Visible And The Invisible. Flash Art.
Chicago-referens (17:e uppl.)Zahm, Olivier. "Conceptual Art, A Perspective. Shifting Back And Forth Between. The Visible And The Invisible." Flash Art 1990.
MLA-referens (8:e uppl.)Zahm, Olivier. "Conceptual Art, A Perspective. Shifting Back And Forth Between. The Visible And The Invisible." Flash Art, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.