Bontea, A. (2014). Cy Twombly: Painting as an Art of Thinking. Cy Twombly : Bild, Text, Paratext.
Chicago-referens (17:e uppl.)Bontea, Adriana. "Cy Twombly: Painting as an Art of Thinking." Cy Twombly : Bild, Text, Paratext 2014.
MLA-referens (8:e uppl.)Bontea, Adriana. "Cy Twombly: Painting as an Art of Thinking." Cy Twombly : Bild, Text, Paratext, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.