Owen, O. S., Chiras, D. D., & Reganold, J. P. (1998). Natural resource conservation: Management for a sustainable future (7th ed.). Upper Saddle River, NJ.: Prentice Hall.
Παραπομπή Chicago StyleOwen, Oliver S., Daniel D. Chiras, and John P. Reganold. Natural Resource Conservation: Management for a Sustainable Future. 7th ed. Upper Saddle River, NJ.: Prentice Hall, 1998.
Παραπομπή MLAOwen, Oliver S., Daniel D. Chiras, and John P. Reganold. Natural Resource Conservation: Management for a Sustainable Future. 7th ed. Upper Saddle River, NJ.: Prentice Hall, 1998.
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