Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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