(East-West Environment and Policy Institute (Honolulu, Hawaii, & .Carpenter, R. A. (1983). Natural systems for development: What planners need to know. Macmillan ; Collier Macmillan.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি(East-West Environment and Policy Institute (Honolulu, Hawaii, এবং Richard A. .Carpenter. Natural Systems for Development: What Planners Need to Know. New York : London: Macmillan ; Collier Macmillan, 1983.
M.L.A (9 ম সংস্করণ) উদ্ধৃতি(East-West Environment and Policy Institute (Honolulu, Hawaii, এবং Richard A. .Carpenter. Natural Systems for Development: What Planners Need to Know. Macmillan ; Collier Macmillan, 1983.
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