Nargundkar Rajendra. (2003). Marketing Research (Text & Cases) (3rd.). Tata McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Nargundkar Rajendra. Marketing Research (Text & Cases). 3rd. Delhi: Tata McGraw Hill, 2003.
Lua MLA (9ú heag.)Nargundkar Rajendra. Marketing Research (Text & Cases). 3rd. Tata McGraw Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.