“Studi Fenomenologi Pengusaha Muda Penjual Ubi Kopong Dalam Berwirausaha”. PRODUCTIVITY: Journal of Integrated Business, Management, and Accounting Research 2, no. 1 (June 9, 2025): 53–67. Accessed June 21, 2026. https://limm-pub.id/index.php/productivity/article/view/87.