Bajpai, N. (2015). Marketing Research (1st.). Pearson.
Lua i Stíl Chicago (17ú heag.)Bajpai, Naval. Marketing Research. 1st. Noida: Pearson, 2015.
Lua MLA (9ú heag.)Bajpai, Naval. Marketing Research. 1st. Pearson, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.