Sehal,J L, Mandal ,C, Mandal ,DK, & Vadivelu,S. (1992). Agro - ecological regions of Inida. ICAR.
Dyfyniad Arddull ChicagoSehal,J L, Mandal ,C, Mandal ,DK, and Vadivelu,S. Agro - Ecological Regions of Inida. New Delhi: ICAR, 1992.
Dyfyniad MLASehal,J L, et al. Agro - Ecological Regions of Inida. ICAR, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.