Sri Lanka. Ministry of Environment and Parliamentary Affairs & Sri Lanka. Madhyama Parisara Adhikāriya. (1990). Sobā: Environmental publication. Ministry of Environment and Parliamentary Affairs : Central Environmental Authority.
Chicagoスタイル(17版)引用形式Sri Lanka. Ministry of Environment and Parliamentary Affairs , Sri Lanka. Madhyama Parisara Adhikāriya. Sobā: Environmental Publication. Colombo: Ministry of Environment and Parliamentary Affairs : Central Environmental Authority, 1990.
MLA(8版)引用形式Sri Lanka. Ministry of Environment and Parliamentary Affairs , Sri Lanka. Madhyama Parisara Adhikāriya. Sobā: Environmental Publication. Ministry of Environment and Parliamentary Affairs : Central Environmental Authority, 1990.
警告: この引用は必ずしも正確ではありません.