Dwivedi, D. (2009). Essentials of business economics. Vikas Publications.
Lua i Stíl Chicago (17ú heag.)Dwivedi, D.N. Essentials of Business Economics. New Delhi: Vikas Publications, 2009.
Lua MLA (9ú heag.)Dwivedi, D.N. Essentials of Business Economics. Vikas Publications, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.