APA

Adrian C. R., Press C., . (1969). The American political process. New York: McGraw-Hill.

Chicago

Adrian Charles R, Press Charles, . 1969. The American political process. New York: McGraw-Hill.

Harvard

Adrian C. R., Press C., . (1969). The American political process. New York: McGraw-Hill.

MLA

Adrian Charles R, Press Charles, . The American political process. New York: McGraw-Hill. 1969.