Saxena, y. (2004). Environment explained: Meaning and definitions of terms and themes. Excel.
Chicago-viite (17. p.)Saxena, y. Environment Explained: Meaning and Definitions of Terms and Themes. New Delhi: Excel, 2004.
MLA-viite (9. p.)Saxena, y. Environment Explained: Meaning and Definitions of Terms and Themes. Excel, 2004.
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