Pasmawati, Yanti, Alva Edy Tontowi, Budi Hartono, and Titis Wijayanto. 2018. “Determination of Favourite Market for 3D-Printer Product Based Online Platform”. International Review of Management and Marketing 8 (5):18-23. https://econjournals.org.tr/index.php/irmm/article/view/6906.