Baker, S. L. (1991). Improving Business Services through the Use of Focus Groups.
Citazione stile Chigago Style (17a edizione)Baker, Sharon L. Improving Business Services Through the Use of Focus Groups. 1991.
Citatione MLA (9a ed.)Baker, Sharon L. Improving Business Services Through the Use of Focus Groups. 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.