8. References
US Department of State (Unknown). Soviet Invasion of Czechoslovakia, 1968. Retrieved
February 21,2014, from http://history.state.gov/milestones/1961-1968/soviet-invasionczechoslavkia
Alpha History (Unknown). The Prague Spring. Retrieved February 21,2014, from
http://alphahistory.com/coldwar/prague-spring/
Evans, C. T. (2000). Czech Invasion. Retrieved February 21,2014, from
http://novaonline.nvcc.edu/eli/evans/his135/events/czech68.htm