Silverman, Franklin H. <br/><br/>
Research design and evaluation in speech-language pathology and audiology :  Asking and answering questions / 
F.H. Silverman. 
 - 3rd ed. 
 - Englewood Cliffs, NJ :  Prentice Hall,  1993. 
 - 390 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0-13-755448-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Speech disorders--Research--Methodology<br/>Language disorders--Research--Methodology<br/>Hearing disorders--Research methods