Yuswanto, Slamet. “Menelisik Pengembangan Profesi Widyaiswara : Inovasi Paten”. Cendekia Niaga 3, no. 1 (October 1, 2019): 1-7. Accessed May 6, 2024. https://jurnal.kemendag.go.id/JCN/article/view/456.