APA

Commons J. R., . (1967). Proportional representation: With chapters on the initiative, the referendum, and primary elections. New York: A. M. Kelley.

Chicago

Commons John Rogers, . 1967. Proportional representation: With chapters on the initiative, the referendum, and primary elections. New York: A. M. Kelley.

Harvard

Commons J. R., . (1967). Proportional representation: With chapters on the initiative, the referendum, and primary elections. New York: A. M. Kelley.

MLA

Commons John Rogers, . Proportional representation: With chapters on the initiative, the referendum, and primary elections. New York: A. M. Kelley. 1967.