Broto, Taukhid W, and Risang Pujiyanto. “Analisis Kebutuhan Kompetensi Pekerja Industri Kulit/Alas Kaki Menyongsong Era Industri 4.0”. Epigram 16, no. 2 (October 7, 2019): 131–140. Accessed December 1, 2021. https://jurnal.pnj.ac.id/index.php/epigram/article/view/1974.