Citazione Stile APA (7a Edizione)

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.