Gay, L. R.; <br/><br/>
Educational Research. 
L.R Gay 
 - 3th ed. 
 - Singapor:  Merrill An Imprint Of Macmillan,  c 1990. 
 - 569 p . : 
<br/><br/><label>ISBN: </label>0029461170 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Educational research --Education--Research
<br/><br/><label>Dewey Class. No.: </label>370.78 GAY