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Gaya APA

E.Soepardja, . (1991). Penanganan Lahan Kritis dari masa ke masa . Bandung: Bandung:Angkasa.

Gaya MLA

E.Soepardja, . "Penanganan Lahan Kritis dari masa ke masa". Bandung: Bandung:Angkasa, 1991. Text.