APA

Keller M., . (1968). The art and politics of Thomas Nast. New York: Oxford Univ. Press.

Chicago

Keller Morton, . 1968. The art and politics of Thomas Nast. New York: Oxford Univ. Press.

Harvard

Keller M., . (1968). The art and politics of Thomas Nast. New York: Oxford Univ. Press.

MLA

Keller Morton, . The art and politics of Thomas Nast. New York: Oxford Univ. Press. 1968.