., Fadli, Zulkifli Nasution, Satia Negara Lubis, and Evawany Yunita Aritonang. “The Impact of Sustainable Certification on Arabica Coffee’s Competitiveness and Regional Development in Aceh, Indonesia”. Journal of Ecohumanism 4, no. 1 (September 20, 2024): 76–85. Accessed October 5, 2024. https://ecohumanism.co.uk/joe/ecohumanism/article/view/4089.