Ferdiansyah, Moh., and Andika Yuli Heryanto. “Production Quality Control Analysis of Harum Manis Using the Six Sigma Method(Case Study: MSME Harum Manis, Lamongan)”. Agroindustrial Technology Journal, vol. 7, no. 2, Dec. 2023, pp. 86-97, https://atj.journal.unida.gontor.ac.id/index.php/atj/article/view/84.