Windy Fadhilah Susanti. “UI/UX Design of the ‘PrintOn!’ Printing Services Marketplace for UMKM Photocopying and Printing Businesses Using the User Centered Design Method”. JURNAL TEKNOLOGI DAN OPEN SOURCE, Vol. 8, no. 2, Oct. 2025, pp. 500 -10, https://ejournal.uniks.ac.id/index.php/JTOS/article/view/4688.