Ate Tarigan, Ruth Riah, 		Setyanigrum, Sri, AND 		Hafiz, Muhammad.
" ANALISIS FAKTOR INTERNAL DAN FAKTOR EKSTERNAL USAHATANI TANAMAN KOPI (Coffea Arabika) DI DESA SUKA KABUPATEN KARO" <em>Scenario (Seminar of Social Sciences Engineering and Humaniora)</em> [Online], (24 April 2023)