Czaja, Ronald. <br/><br/>
Designing surveys :  a guide to decisions and procedures / 
Ronald Czaja, Johnny Blair 
 - 2nd ed. 
 - Thousand Oaks, California :  Pine Forge Press,  2005 
 - 301 p. :  ill. ;  23 cm 
<br/><br/><label>ISBN: </label>0761927468 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveys<br/>Sampling (Statistics)