Herath, J. W. (1975). Mineral resources of Sri Lanka. Geological Survey Dept., Ministry of Industries and Scientific Affairs, Republic of Sri Lanka (Ceylon).
Citace podle Chicago (17th ed.)Herath, J. W. Mineral Resources of Sri Lanka. Colombo: Geological Survey Dept., Ministry of Industries and Scientific Affairs, Republic of Sri Lanka (Ceylon), 1975.
Citace podle MLA (8th ed.)Herath, J. W. Mineral Resources of Sri Lanka. Geological Survey Dept., Ministry of Industries and Scientific Affairs, Republic of Sri Lanka (Ceylon), 1975.
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