Mahmudah, Mahmudah, Elli Afrida Afrida, Try Koryati, and Dedi Wahyudi. 2025. “Impact of Sustainable Agricultural Practices: Quality Aspects of Organic and Conventional Arabica Coffee Planting Systems in Karo Regency North Sumatra Indonesia”. Contributions of Central Research Institute for Agriculture 19 (4):178-84. https://ejournal.cria.or.id/index.php/ccria/article/view/361.