Lidya Fankky Oktavia Putri et al. 2022. Classification of Face Mask Detection Using Transfer Learning Model DenseNet169. Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi). 6, 5 (Oct. 2022), 790–796. DOI:https://doi.org/10.29207/resti.v6i5.4336.