Herath, J. W. (1975). Mineral resources of Sri Lanka. Geological Survey Dept., Ministry of Industries and Scientific Affairs, Republic of Sri Lanka (Ceylon).
Dyfyniad Arddull ChicagoHerath, J. W. Mineral Resources of Sri Lanka. Colombo: Geological Survey Dept., Ministry of Industries and Scientific Affairs, Republic of Sri Lanka (Ceylon), 1975.
Dyfyniad MLAHerath, J. W. Mineral Resources of Sri Lanka. Geological Survey Dept., Ministry of Industries and Scientific Affairs, Republic of Sri Lanka (Ceylon), 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.