Cita APA (7a ed.)
Hagen, O. (1940). The birth of the American tradition in art. Scribner's sons.
Cita Chicago Style (17a ed.)
Hagen, Oskar. The Birth of the American Tradition in Art. New York, London: Scribner's sons, 1940.
Cita MLA (9a ed.)
Hagen, Oskar. The Birth of the American Tradition in Art. Scribner's sons, 1940.
Precaución: Estas citas no son 100% exactas.