“Shade Tress in Agroforestry Cultivation Systems As a Solution to Improve Environmental Quality and Welfare of Ulubelu Coffee Farmers”. Jurnal Ilmu Ilmu Kehutanan 7, no. 2 (September 24, 2023): 68–76. Accessed August 2, 2025. https://jiik.ejournal.unri.ac.id/index.php/JIIK/article/view/64.