Bibby, John, and Holbrook, Thomas. 2004. Politics in the American States: A Comparative Analysis, 8th Edition. Ed. Virginia Gray and Russell L. Hanson. Washington D.C.: CQ Press, p. 62-100.
Brereton Charles. First in the Nation: New Hampshire and the Premier Presidential Primary. Portsmouth, NH: Peter E. Randall Publishers, 1987.
Hershey, Majorie. Political Parties in America, 12th Edition. New York: Pearson Longman, 2007. p. 157-73.
