Patterson, T. E. (2001). The American democracy (5th ed.). Boston: McGraw Hill.
Trích dẫn kiểu ChicagoPatterson, Thomas E. The American Democracy. 5th ed. Boston: McGraw Hill, 2001.
Deismireacht MLAPatterson, Thomas E. The American Democracy. 5th ed. Boston: McGraw Hill, 2001.
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