APA (7th ed.) Citation

Ferguson, J. H., & McHenry, D. E. (1977). The American system of government (13. ed., 1. printing.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Ferguson, John H., and Dean E. McHenry. The American System of Government. 13. ed., 1. printing. New York [u.a.]: McGraw-Hill, 1977.

MLA (9th ed.) Citation

Ferguson, John H., and Dean E. McHenry. The American System of Government. 13. ed., 1. printing. McGraw-Hill, 1977.