APA (7th ed.) Citation

Marx, C. (2012). The ultimate timeline of world history. Barron's Educational Series, Inc.

Chicago Style (17th ed.) Citation

Marx, Christoph. The Ultimate Timeline of World History. Hauppauge, New York: Barron's Educational Series, Inc, 2012.

MLA (9th ed.) Citation

Marx, Christoph. The Ultimate Timeline of World History. Barron's Educational Series, Inc, 2012.

Warning: These citations may not always be 100% accurate.