Warsidi, Warsidi, and Jubei Levianto. “Upaya Peningkatan Produktivitas Kerja Melalui Pelatihan Dan Motivasi”. Management Studies and Entrepreneurship Journal (MSEJ) 6, no. 1 (January 17, 2025): 134–139. Accessed July 12, 2025. https://yrpipku.com/journal/index.php/msej/article/view/7013.