APA

Beard C. A., Beard W., . (1949). American government and politics. New York: Macmillan Co.

Chicago

Beard Charles Austin, Beard William, . 1949. American government and politics. New York: Macmillan Co.

Harvard

Beard C. A., Beard W., . (1949). American government and politics. New York: Macmillan Co.

MLA

Beard Charles Austin, Beard William, . American government and politics. New York: Macmillan Co. 1949.