Drainage & Reclamation Institute of Pakistan. (1980). DRIP newsletter. DRIP.
Čikaški stil citiranja (17. izdanje)Drainage & Reclamation Institute of Pakistan. DRIP Newsletter. Hyderabad: DRIP, 1980.
MLA način citiranja (8. izdanje)Drainage & Reclamation Institute of Pakistan. DRIP Newsletter. DRIP, 1980.
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