Tham khảo Stephen A. Douglas

  1. ↑ Johannsen, Robert Walter (1997). Stephen A. Douglas. Chicago, IL: University of Illinois Press. tr. 4. ISBN 978-0-252-06635-1. 
  2. ↑ Carr, Clark Ezra (1909). Stephen A. Douglas: His Life, Public Services, Speeches and Patriotism. Chicago, IL: A. C. McClurg & Co. tr. xiii. 
  3. ↑ Gardner, William. Life of Stephen A. Douglas. Boston, MA: Roxburgh Press. tr. 171. 
  4. ↑ Brandon Village Historic District Lưu trữ January 29, 2009, tại Wayback Machine., Vermont Heritage Network via the University of Vermont. Accessed 2009-07-14.
  5. ↑ Morris 2008, pg. 8
  6. ↑ http://woodstockhistorical.org/wp-content/uploads/2013/01/Stephen-Douglas.pdf
  7. ↑ Memorial Record of the County of Cuyahoga and City of Cleveland, Ohio. Chicago, IL: Lewis Publishing Company. 1894. tr. 37. 

Tài liệu tham khảo

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