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Beck, Roger B. Modern World History: Patterns of Interaction. Orlando, FL.: Houghton Mifflin Harcourt Pub., 2012. Print.
Edict of Worms (1521)." World History: The Modern Era. ABC-CLIO, 2014. Web. 7 Mar. 2014.
Beck, Roger B. Modern World History: Patterns of Interaction. Orlando, FL.: Houghton Mifflin Harcourt Pub., 2012. Print.