Kurup,R S. (1982). Janasamkhya Vardhanayute pratyaghatangal: Consequence of population growth. State institute of languages.
Dyfyniad Arddull ChicagoKurup,R S. Janasamkhya Vardhanayute Pratyaghatangal: Consequence of Population Growth. Thiruvananthapuram: State institute of languages, 1982.
Dyfyniad MLAKurup,R S. Janasamkhya Vardhanayute Pratyaghatangal: Consequence of Population Growth. State institute of languages, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.