Drainage & Reclamation Institute of Pakistan. (1980). DRIP newsletter. DRIP.
Chicagoスタイル(17版)引用形式Drainage & Reclamation Institute of Pakistan. DRIP Newsletter. Hyderabad: DRIP, 1980.
MLA(8版)引用形式Drainage & Reclamation Institute of Pakistan. DRIP Newsletter. DRIP, 1980.
警告: この引用は必ずしも正確ではありません.