Focus Groups

Eitemau Tebyg

• Focus Groups
  gan: David W Stewart, Prem N Shamdasani
• Focus groups: theory and practice
  gan: Stewart, David W Shamdasani, Prem N.
• Focus groups : theory and practice V 20
  gan: Shamdasani, Prem N
  Cyhoeddwyd: (1990)
• Focus groups: theory and practice
  gan: Prem N Shamdasani; Author, et al.
  Cyhoeddwyd: (2007)
• Focus groups : theory and practice /
  gan: Stewart, David W.