Varshney, C. K. (1981). Water pollution and management reviews, 1981. South Asian Publishers.
Lua i Stíl Chicago (17ú heag.)Varshney, C. K. Water Pollution and Management Reviews, 1981. New Delhi: South Asian Publishers, 1981.
Lua MLA (8ú heag.)Varshney, C. K. Water Pollution and Management Reviews, 1981. South Asian Publishers, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.