Successful focus groups : advancing the state of the art / ed. David L. Morgan
Successful focus groups : advancing the state of the art / ed. David L. Morgan
. - Newbury Park : Sage Publications, 1993
. - XV, 271 p. 22 cm
. - (Sage focus edition; 156)
0-8039-4874-3 (Brochado)
615.851.6