Castillon, D. A. (1996). Conservation of natural resources: A resource management approach (2nd ed.). Brown & Benchmark Publishers.
Chicago Style (17. basım) AtıfCastillon, David A. Conservation of Natural Resources: A Resource Management Approach. 2nd ed. Madison, Wis: Brown & Benchmark Publishers, 1996.
MLA (9th ed.) AtıfCastillon, David A. Conservation of Natural Resources: A Resource Management Approach. 2nd ed. Brown & Benchmark Publishers, 1996.
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