Total data: 3
Constructing achicvement terts / Norman E. Gronlund
Norman E. Gronlund;London : Prentice Hall , 1982
Behavior Analysis in Education : Focus on Measurably superior instruction
;California : Broks/Cole , 1994
Educational measurement and testing / William Wiersma
Wiersma, William; Jurs, Stephen G.;Boston : Allyn & Bacon , 1990