Cita APA

Ferguson, J. H., & McHenry, D. E. (1965). American system of government (8a. ed.). New York: McGraw-Hill.

Citación estilo Chicago

Ferguson, John H., and Dean E. McHenry. American System of Government. 8a. ed. New York: McGraw-Hill, 1965.

Cita MLA

Ferguson, John H., and Dean E. McHenry. American System of Government. 8a. ed. New York: McGraw-Hill, 1965.