Cita APA (7a ed.)

Beard, C. A. (1965). An economic interpretation of the Constitution of the United States. Free Press [etc.].

Cita Chicago Style (17a ed.)

Beard, Charles Austin. An Economic Interpretation of the Constitution of the United States. New York [etc.]: Free Press [etc.], 1965.

Cita MLA (9a ed.)

Beard, Charles Austin. An Economic Interpretation of the Constitution of the United States. Free Press [etc.], 1965.