Bastian, H. (1976). Cy Twombly.
Cita Chicago (17th ed.)Bastian, Heiner. Cy Twombly. Hannover, 1976.
Cita MLA (8th ed.)Bastian, Heiner. Cy Twombly. 1976.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)