Dickhoff, W. (1986). What it is: Wilfried Dickhoff. Tony Shafrazi Gallery. Tony Shafrazi Gallery.
Chicago-referens (17:e uppl.)Dickhoff, Wilfried. What It Is: Wilfried Dickhoff. Tony Shafrazi Gallery. New York: Tony Shafrazi Gallery, 1986.
MLA-referens (8:e uppl.)Dickhoff, Wilfried. What It Is: Wilfried Dickhoff. Tony Shafrazi Gallery. Tony Shafrazi Gallery, 1986.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.