Gupta, G. (1988). Managerial economics. Tata Mc Graw Hill.
Lua i Stíl Chicago (17ú heag.)Gupta, G. Managerial Economics. New Delhi: Tata Mc Graw Hill, 1988.
Lua MLA (9ú heag.)Gupta, G. Managerial Economics. Tata Mc Graw Hill, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.