Singh, G., & Venkataramanan, C. (1990). Manual of soil and water conservation practices. Oxford.
Lua i Stíl Chicago (17ú heag.)Singh, Gurmel, agus C. Venkataramanan. Manual of Soil and Water Conservation Practices. New Delhi: Oxford, 1990.
Lua MLA (9ú heag.)Singh, Gurmel, agus C. Venkataramanan. Manual of Soil and Water Conservation Practices. Oxford, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.