Setyawan TH, Marsono M, Mobo FD. Shadow Core Development to Reduce Hidden Waste in Operator Tool Management in the Manufacturing Industry. Jurnal Pendidikan dan Teknologi Indonesia [Internet]. 25 September 2026 [dikutip 2 Oktober 2026];6(9):2137-45. Tersedia pada: https://jpti.journals.id/index.php/jpti/article/view/1555