Ferguson, J. H., & McHenry, D. E. (1970). Elements of American Government (9th ed.). McGraw-Hill.
Chicago Style aipamenaFerguson, John Henry, and Dean Eugene McHenry. Elements of American Government. 9th ed. New York: McGraw-Hill, 1970.
MLA aipamenaFerguson, John Henry, and Dean Eugene McHenry. Elements of American Government. 9th ed. McGraw-Hill, 1970.
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