(East-West Environment and Policy Institute (Honolulu, Hawaii, & .Carpenter, R. A. (1983). Natural systems for development: What planners need to know. Macmillan ; Collier Macmillan.
Lua i Stíl Chicago (17ú heag.)(East-West Environment and Policy Institute (Honolulu, Hawaii, agus Richard A. .Carpenter. Natural Systems for Development: What Planners Need to Know. New York : London: Macmillan ; Collier Macmillan, 1983.
Lua MLA (9ú heag.)(East-West Environment and Policy Institute (Honolulu, Hawaii, agus Richard A. .Carpenter. Natural Systems for Development: What Planners Need to Know. Macmillan ; Collier Macmillan, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.