Books
Foote, Shelby. The Civil War: a Narrative. New York: Random House, 1974.
McPherson, James M. Ordeal by Fire: the Civil War and Reconstruction. 3rd Edition. New York: Princeton University Press, 2001.
Swanberg, W.A. First blood; the story of Fort Sumter.
New York: Scribner Press, 1957.
Websites-
http://memory.loc.gov/ammem/today/mar30.html
http://sunsite.utk.edu/civil-war/
http://teachpol.tcnj.edu/amer_pol_hist/thumbnail189.html
http://www.civilwarhome.com/
http://www.civil-war.net/
http://www.nps.gov/fosu/sb/fosuflag/
http://www.tulane.edu/~latner/MainCrisis.html
http://www.nara.gov