APA aipamena

Ferguson, J. H., & McHenry, D. E. (1967). The American system of government. New York: McGraw-Hill Book Company.

Chicago Style aipamena

Ferguson, John H., và Dean E. McHenry. The American System of Government. New York: McGraw-Hill Book Company, 1967.

MLA aipamena

Ferguson, John H., và Dean E. McHenry. The American System of Government. New York: McGraw-Hill Book Company, 1967.