Sri Lanka. Iḍam hā Iḍam Saṃvardhana Amātyāṃśaya. (1980). Resource development. Ministry of Lands & Land Development.
Dyfyniad Arddull ChicagoSri Lanka. Iḍam hā Iḍam Saṃvardhana Amātyāṃśaya. Resource Development. [Colombo]: Ministry of Lands & Land Development, 1980.
Dyfyniad MLASri Lanka. Iḍam hā Iḍam Saṃvardhana Amātyāṃśaya. Resource Development. Ministry of Lands & Land Development, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.