Interpreting qualitative data 
Silverman, David. 
 - 6th ed. 
 -  SAGE Publications Inc.,  2020 
 - xxiv, 537 pages 
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<br/><br/><label>ISBN: </label>978-1-52646724-9 
<br/><br/><label>Dewey Class. No.: </label>300.72 S5875 2020