Cita APA (7a ed.)

Ferguson, J. H., & McHenry, D. E. (1970). Elements of American Government (9th ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Ferguson, John Henry, y Dean Eugene McHenry. Elements of American Government. 9th ed. New York: McGraw-Hill, 1970.

Cita MLA (9a ed.)

Ferguson, John Henry, y Dean Eugene McHenry. Elements of American Government. 9th ed. McGraw-Hill, 1970.