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Gaya APA
Soekartawi,dkk, .(1986).Ilmu Usaha Tani dan Penelitian Untuk Pengembangan Petani Kecil .Jakarta:Jakarta: UI-Press.
Gaya MLA
Soekartawi,dkk, ."Ilmu Usaha Tani dan Penelitian Untuk Pengembangan Petani Kecil".Jakarta:Jakarta: UI-Press,1986.Text.