Perko, M. (2016). Did you know that--?: Surprising-but-true facts about history, science, inventions, geography, origins, art, music, and more (Revised and expanded edition.). Open Road Integrated Media.
Chicago Style (17th ed.) CitationPerko, Marko. Did You Know That--?: Surprising-but-true Facts About History, Science, Inventions, Geography, Origins, Art, Music, and More. Revised and expanded edition. New York: Open Road Integrated Media, 2016.
MLA (8th ed.) CitationPerko, Marko. Did You Know That--?: Surprising-but-true Facts About History, Science, Inventions, Geography, Origins, Art, Music, and More. Revised and expanded edition. Open Road Integrated Media, 2016.
Warning: These citations may not always be 100% accurate.