(1982). Fourth all India educational survey. National council of Educational Research and Training.
Dyfyniad Arddull ChicagoFourth All India Educational Survey. New Delhi: National council of Educational Research and Training, 1982.
Dyfyniad MLAFourth All India Educational Survey. National council of Educational Research and Training, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.