Nuryawan, Arif. “Eco-Print on Recycle Paper and Fabric As Main Products of Business Development Program of Intellectual Property Campus of Universitas Sumatera Utara : Eco-Print on Recycle Paper and Fabric”. Journal of Saintech Transfer 3, no. 1 (June 29, 2020): 1–11. Accessed August 4, 2025. https://idjpcr.usu.ac.id/jst/article/view/3917.