Harahap, L., Purba, S.D. , Sirait, K. and Panggabean, J.F.R. 2022. Application of the K-NN Algorithm for Sales Effectiveness of Pastries at Mami’s Kitchen Bakery. Jurnal Mantik. 6, 3 (Nov. 2022), 3872-3879. DOI:https://doi.org/10.35335/mantik.v6i3.3301.