Sri Lanka. Iḍam hā Iḍam Saṃvardhana Amātyāṃśaya. (1980). Resource development. Ministry of Lands & Land Development.
Chicagoスタイル(17版)引用形式Sri Lanka. Iḍam hā Iḍam Saṃvardhana Amātyāṃśaya. Resource Development. [Colombo]: Ministry of Lands & Land Development, 1980.
MLA(8版)引用形式Sri Lanka. Iḍam hā Iḍam Saṃvardhana Amātyāṃśaya. Resource Development. Ministry of Lands & Land Development, 1980.
警告: この引用は必ずしも正確ではありません.