Marx, C. (2012). The ultimate timeline of world history. Barron's Educational Series, Inc.
Citazione stile Chigago Style (17a edizione)Marx, Christoph. The Ultimate Timeline of World History. Hauppauge, New York: Barron's Educational Series, Inc, 2012.
Citatione MLA (9a ed.)Marx, Christoph. The Ultimate Timeline of World History. Barron's Educational Series, Inc, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.