Citazione Stile APA (7a Edizione)

Swarthout, J. M., & Bartley, E. R. (1955). Principles and problems of american national government (2a. ed.). Oxford University.

Citazione stile Chigago Style (17a edizione)

Swarthout, John M., e Ernest R. Bartley. Principles and Problems of American National Government. 2a. ed. Nueva York: Oxford University, 1955.

Citatione MLA (9a ed.)

Swarthout, John M., e Ernest R. Bartley. Principles and Problems of American National Government. 2a. ed. Oxford University, 1955.