Martella, Ronald C., <br/><br/>
Understanding and interpreting educational research / 
Ronald C. Martella, J. Ron Nelson, Robert L. Morgan, Nancy E. Marchand-Martella. 
 - xxii, 666 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>9781462509621  RM245.48 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research--Methodology.<br/>Psychology--Research--Methodology.<br/>Education--Research--Evaluation.<br/>Psychology--Research--Evaluation.