Polit, Denise F. <br/><br/>
Essentials of nursing research :  Methods, appraisal, and utilization / 
Denise F. Polit, Bernadette P. Hungler. 
 - 3rd ed. 
 - Philadelphia :  J.B. Lippincott Co. ,  1993. 
 - XIV, 479 p. 
<br/><br/><label>ISBN: </label>0-397-54922-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nursing research