APA (7th ed.) Citation

Twombly, C., & Smith, R. (1986). Cy Twombly. Hirschl & Adler Modern.

Chicago Style (17th ed.) Citation

Twombly, Cy, and Roberta Smith. Cy Twombly. New York, N.Y.: Hirschl & Adler Modern, 1986.

MLA (9th ed.) Citation

Twombly, Cy, and Roberta Smith. Cy Twombly. Hirschl & Adler Modern, 1986.

Warning: These citations may not always be 100% accurate.