Olson, S. (2004). Count down: Six kids vie for glory at the world toughest math competition. Houghton Mifflin Comp.
Chicago Style (17th ed.) CitationOlson, Steve. Count Down: Six Kids Vie for Glory at the World Toughest Math Competition. Houghton Mifflin Comp, 2004.
MLA (8th ed.) CitationOlson, Steve. Count Down: Six Kids Vie for Glory at the World Toughest Math Competition. Houghton Mifflin Comp, 2004.
Warning: These citations may not always be 100% accurate.