Qualitative research :  theory, method and practice / 
edited by David Silverman. 
 - London :  SAGE Publications,  1997. 
 - 262 p. :  ill. ;  25 cm. 
<br/><br/>References : p. 252-253. 
<br/><br/><label>ISBN: </label>0803976666  RM107.88 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology.<br/>Social sciences--Statistical methods.