Armas, Kenneth Lucto. “Revolutionizing the Circular Economy: Exploring the Viability of Used Coffee Grounds in the Design and Development of Eco-Friendly Products”. Asian Journal of Agriculture and Rural Development 13, no. 3 (August 17, 2023): 225–231. Accessed May 20, 2024. http://archive.aessweb.com/index.php/5005/article/view/4855.