1. Allington , R.L. Block , C.C. Morrow , L. 2000, April Effects of departmentalization and non-departmentalization on fourth-grade reading achievement.
2. Performance testing being readied for Ohio teachers;Archer;Education Week,2001
3. Metaphysics, Book III 3 W.D. Ross http:www.knuten.liu.sebjoch50aAristortlenico_ethics.txt