Jaga Praveen Kumar & Singh Bharat. (2016). Soil Fertility Fertilizers and Agrochemicals. Daya Publishing House.
Lua i Stíl Chicago (17ú heag.)Jaga Praveen Kumar agus Singh Bharat. Soil Fertility Fertilizers and Agrochemicals. New Delhi: Daya Publishing House, 2016.
Lua MLA (9ú heag.)Jaga Praveen Kumar agus Singh Bharat. Soil Fertility Fertilizers and Agrochemicals. Daya Publishing House, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.