Gaya APA
Sjahdanulirwan, , M., Kusminingrum, , N. (1998).
The Effectiveness of Vegetation for Reducing Air Pollution .
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Gaya MLA
Sjahdanulirwan, , M.., Kusminingrum, , Nanny.
"The Effectiveness of Vegetation for Reducing Air Pollution".
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s.n.,
1998.
Computer Software.