[1]
Maria Helena Chandra and N. I. P. Lodo, “Analisis Sistem Kerja Unit Pengelolaan Hasil (UPH) Kopi Sinar Tani Berbasis Model Value Chain Porter”, SOSMANIORA: Jurnal Ilmu Sosial dan Humaniora, vol. 5, no. 2, pp. 741–751, Jun. 2026.