Pamoniara, Winda. “ANALISIS PRODUKTIFITAS TANAMAN KOPI DI KECAMATAN GEMAWANG KABUPATEN TEMANGGUNG”. Economics Development Analysis Journal 2, no. 1 (February 15, 2013). Accessed November 22, 2024. https://journal.unnes.ac.id/sju/edaj/article/view/1006.