Gustave Courbet.

MLA

Mack, Gerstle. Gustave Courbet. New York City: Da Capo Press, 1951.

APA

Mack, G. (1951). Gustave Courbet. New York City: Da Capo Press.

Chicago

Mack, Gerstle Gustave Courbet. New York City: Da Capo Press, 1951.