APA

Cummings P., . (1971). A dictionary of contemporary American artists. New York: St. Martin's Press.

Chicago

Cummings Paul, . 1971. A dictionary of contemporary American artists. New York: St. Martin's Press.

Harvard

Cummings P., . (1971). A dictionary of contemporary American artists. New York: St. Martin's Press.

MLA

Cummings Paul, . A dictionary of contemporary American artists. New York: St. Martin's Press. 1971.