APA (7 ম সংস্করণ) উদ্ধৃতি

Kessy, J. F. (1998). Conservation and utilization of natural resources in the east Usambara forest reserves: Conventional views and local perspectives. Wageningen Agricultural University.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Kessy, John Francis. Conservation and Utilization of Natural Resources in the East Usambara Forest Reserves: Conventional Views and Local Perspectives. Wageningen: Wageningen Agricultural University, 1998.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Kessy, John Francis. Conservation and Utilization of Natural Resources in the East Usambara Forest Reserves: Conventional Views and Local Perspectives. Wageningen Agricultural University, 1998.