Patton, Michael Quinn.
Qualitative research & evaluation methods /
Michael Quinn Patton 
. - 3rd edition 
. - Thousand Oaks : London : New Delhi : Sage Publications,  2002 
. - xxiv, 598, R36 p.  ill., tab., schem.  26 cm. 
<br/>К.: Бібліогр. : с. R1-36, Покажчик 
<br/><label>  ISBN: </label>0-7619-1971-6