Gultom, L., & 		Putra, H.
(2020).
 ANALISIS TINGKAT EFESIENSI USAHATANI  KOPI ARABIKA (Coffea arabica L.).
<em>JURNAL AGROTEKDA, 3</em>(2), 66-73.
Retrieved from <a href="https://jurnal.darmaagung.ac.id/index.php/agrotekda/article/view/724" target="_new">https://jurnal.darmaagung.ac.id/index.php/agrotekda/article/view/724</a>