Cita APA (7th ed.)

Johnson, C. O. (1960). American national government (5a. ed.). Thomas Y. Crowell.

Cita Chicago (17th ed.)

Johnson, Claudius O. American National Government. 5a. ed. Nueva York: Thomas Y. Crowell, 1960.

Cita MLA (9th ed.)

Johnson, Claudius O. American National Government. 5a. ed. Thomas Y. Crowell, 1960.