Vaughn, Sharon 1952-.
Focus group interviews in education and psychology /
Sharon Vaughn, Jeanne Shay Schumm, Jane Sinagub 
. - Thousand Oaks : London : New Delhi : Sage Publications,  1996 
. - 173 p.  tab.  22 см. 
<br/>К.: Бібліогр. : c. 156-162, Покажчик 
<br/><label>  ISBN: </label>0-8039-5893-5