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Gaya APA
Irwan, Z, D.(2003).Prinsip-Prinsip Ekologi dan Organisasi Ekosistem, Komunitas, & Lingkungan .Jakarta:Bumi Aksara.
Gaya MLA
Irwan, Zoer'aini, Djamal."Prinsip-Prinsip Ekologi dan Organisasi Ekosistem, Komunitas, & Lingkungan".Jakarta:Bumi Aksara,2003.Text.