Government of Kerala. (2010). Economic review 2009. State Plannig Board.
Dyfyniad Arddull ChicagoGovernment of Kerala. Economic Review 2009. Thiruvananthapuram: State Plannig Board, 2010.
Dyfyniad MLAGovernment of Kerala. Economic Review 2009. State Plannig Board, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.