Krishnamoorthy Bala. (2014). Environmental Management (2nd.). Prentice Hall.
Chicago-čujuhus (17. p.)Krishnamoorthy Bala. Environmental Management. 2nd. New Delhi: Prentice Hall, 2014.
MLA-čujuhus (9. p.)Krishnamoorthy Bala. Environmental Management. 2nd. Prentice Hall, 2014.
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