Cita APA (7a ed.)

Ferguson, J. H., & McHenry, D. E. (1963). The American federal government (7th ed.). McGraw-Hill Book Company.

Cita Chicago Style (17a ed.)

Ferguson, John Henry, y Dean Eugene McHenry. The American Federal Government. 7th ed. New York [etc.]: McGraw-Hill Book Company, 1963.

Cita MLA (9a ed.)

Ferguson, John Henry, y Dean Eugene McHenry. The American Federal Government. 7th ed. McGraw-Hill Book Company, 1963.