Degas.

MLA

Gordon, Robert, and Andrew Forge. Degas. New York City: Harry N. Abrams, 1988.

APA

Gordon, R., & Forge, A. (1988). Degas. New York City: Harry N. Abrams.

Chicago

Gordon, Robert, and Andrew Forge. Degas. New York City: Harry N. Abrams, 1988.