Patiram, Brajendra, Ramesh,T, & Thakur,N S Azad. (2007). Soil testing & analysis: Plant,water & pesticide residuse. New India publishing agency.
Dyfyniad Arddull ChicagoPatiram, Brajendra, Ramesh,T, and Thakur,N S Azad. Soil Testing & Analysis: Plant,water & Pesticide Residuse. New Delhi: New India publishing agency, 2007.
Dyfyniad MLAPatiram, et al. Soil Testing & Analysis: Plant,water & Pesticide Residuse. New India publishing agency, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.