Wilson Alan. (2014). Marketing Research an Integrated Approach (3rd.). Pearson.
Lua i Stíl Chicago (17ú heag.)Wilson Alan. Marketing Research an Integrated Approach. 3rd. Noida: Pearson, 2014.
Lua MLA (9ú heag.)Wilson Alan. Marketing Research an Integrated Approach. 3rd. Pearson, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.