References
http://www.english.illinois.edu/maps/vietnam/timeline.htm
http://www.history.com/topics/vietnam-war
http://www.britannica.com/EBchecked/topic/628478/Vietnam-War
http://www.sparknotes.com/history/american/vietnamwar/section8.rhtml
http://www.sparknotes.com/history/american/vietnamwar/summary.html
http://www.shmoop.com/vietnam-war/people.html