Gopalkrishna, D. (1994). Study of Managerial Economics. Himalaya Publishing House.
Lua i Stíl Chicago (17ú heag.)Gopalkrishna, D. Study of Managerial Economics. Mumbai: Himalaya Publishing House, 1994.
Lua MLA (9ú heag.)Gopalkrishna, D. Study of Managerial Economics. Himalaya Publishing House, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.