Purnomo, Purnomo, Achmad Hufad, Nani Sutarni, and Mohamad Hadi Ali Mutaman. “Technology-Based Education Marketplace Software for Adult Learning”. Journal of Advanced Research in Applied Sciences and Engineering Technology (October 9, 2024): 85–100. Accessed November 22, 2024. https://semarakilmu.com.my/journals/index.php/applied_sciences_eng_tech/article/view/11001.