APA (7 ম সংস্করণ) উদ্ধৃতি

Kemper, K. E. (1996). The cost of free water: Water resources allocation and use in the Curu Valley, Ceará, Northeast Brazil. Water and Environmental Studies, Linköping University.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Kemper, Karin E. The Cost of Free Water: Water Resources Allocation and Use in the Curu Valley, Ceará, Northeast Brazil. Linköping, Sweden: Water and Environmental Studies, Linköping University, 1996.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Kemper, Karin E. The Cost of Free Water: Water Resources Allocation and Use in the Curu Valley, Ceará, Northeast Brazil. Water and Environmental Studies, Linköping University, 1996.