Focus group research.Vol. 3 / ed. by Graham R. Walden.
    Los Angeles [etc.] : SAGE, 2012. VI, 412 s. : il. ; 24 cm.
    (SAGE Benchmarks in Social Research Methods)
    (SAGE Benchmarks in Social Research Methods)
    ISBN 978-0-85702-567-8

   
T.17611        UKD: 303.4/.8=111