References
^ Math Contests - Grades 4, 5, And 6 : School Years 2001-2002 Through 2005-2006 5 (2006, Paperback) ISBN 9780940805156 (revised Dec 2021)^ Conrad, Steven R.; Flegler, Daniel (2014). Math Contests - Grades 4, 5, And 6 : School Years 2001-2002 Through 2005-2006, Mathematics Leagues. BiggerBooks. ISBN 9780940805156 (revised Nov 2023)^ Mathematics Leagues 9780940805156, Mathematics Leagues. NeweggBusiness. ISBN 9780940805156 (revised Aug 2016)
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