Lua APA (7ú heag.)
Tripathi, R. P., & Singh, H. (1993). Soil erosion and conservation. New Age International.
Lua i Stíl Chicago (17ú heag.)
Tripathi, R. P., agus H.P Singh. Soil Erosion and Conservation. Kolkata: New Age International, 1993.
Lua MLA (9ú heag.)
Tripathi, R. P., agus H.P Singh. Soil Erosion and Conservation. New Age International, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.