Estes, Thomas. <br/><br/>
Instruction :   a models approach / 
Thomas H. Estes, Susan L. Mintz and Mary Alice Gunter. 
 - 6th ed. 
 - Boston :  Pearson,  2011. 
 - xxvii, 356p. 
<br/><br/><label>ISBN: </label>0132136815 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional system--Design.<br/>Programmed instruction.<br/>Educational technology.