Social research methods : qualitative and quantitative approaches 
Neuman, William Lawrence. 
 - Third edition. 
 -  Allyn and Bacon.  1997 
 - xiv, 560 pages. 
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<br/><br/><label>ISBN: </label>0-205-19356-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences -- Research -- Methodology.
<br/><br/><label>Dewey Class. No.: </label>GS 301.01 N39s 1997