Krishnamoorthy, B. (2017). Environmental Management (3.). PHI.
Lua i Stíl Chicago (17ú heag.)Krishnamoorthy, Bala. Environmental Management. 3. New Delhi: PHI, 2017.
Lua MLA (9ú heag.)Krishnamoorthy, Bala. Environmental Management. 3. PHI, 2017.
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