Andryani, Nur Afny C. “Study of Viola Jones Face Detection on Color Image Based on Skin Pigmentation Level”. Jurnal Elektro dan Mesin Terapan 1, no. 1 (May 30, 2015): 44–52. Accessed March 13, 2025. https://jurnal.pcr.ac.id/index.php/elementer/article/view/16.