Erickson, S. L. (1999). Fundamentals of environmental management. Wiley.
Chicago-čujuhus (17. p.)Erickson, Steven L. Fundamentals of Environmental Management. New York: Wiley, 1999.
MLA-čujuhus (9. p.)Erickson, Steven L. Fundamentals of Environmental Management. Wiley, 1999.
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