Pradana, A., and Supriyati. “Analisis Cacat Painting Pada Produk Led Street Light Dengan Pendekatan DMAIC (Define Measure Analyze Improvement Control) ”. Prosiding Sains Dan Teknologi, vol. 2, no. 1, Feb. 2023, pp. 335-42, https://jurnal.pelitabangsa.ac.id/index.php/SAINTEK/article/view/2182.