Focus groups : theory and practice /
Universidad de Aconcagua – Sistema de Bibliotecas:
Focus groups : theory and practice / David W. Stewart, Prem N. Shamdasani. - Newbury Park, Calif. : Sage Publications, 1990. - 153 p. : ill. ; 23 cm. - Applied social research methods series ; v. 20 .
Focus groups : theory and practice / David W. Stewart, Prem N. Shamdasani. - Newbury Park, Calif. : Sage Publications, 1990. - 153 p. : ill. ; 23 cm. - Applied social research methods series ; v. 20 .