APA

Draper T., . (1966). The roots of American communism. New York: Viking Press.

Chicago

Draper Theodore, . 1966. The roots of American communism. New York: Viking Press.

Harvard

Draper T., . (1966). The roots of American communism. New York: Viking Press.

MLA

Draper Theodore, . The roots of American communism. New York: Viking Press. 1966.