Successful focus groups : advancing the state of the art / ed. lit. David L. Morgan
Successful focus groups : advancing the state of the art / ed. lit. David L. Morgan
. - Newbury Park : Sage, 1993
. - XV, 271 p. 22 cm
. - (Sage focus editions . 156)
0-8039-4874-3 (brochado) : compra
Metodologia científica