(East-West Environment and Policy Institute (Honolulu, Hawaii, & .Carpenter, R. A. (1983). Natural systems for development: What planners need to know. Macmillan ; Collier Macmillan.
Chicago-viite (17. p.)(East-West Environment and Policy Institute (Honolulu, Hawaii, ja Richard A. .Carpenter. Natural Systems for Development: What Planners Need to Know. New York : London: Macmillan ; Collier Macmillan, 1983.
MLA-viite (9. p.)(East-West Environment and Policy Institute (Honolulu, Hawaii, ja Richard A. .Carpenter. Natural Systems for Development: What Planners Need to Know. Macmillan ; Collier Macmillan, 1983.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.