Saputra, E., Rig, B., Hutapea, O., Rahmananta, R., Purba, A. and Singgalen, Y. (2023) “Analysis and Design of Digital Marketing Information System for Building Material Store”, Journal of Information Systems and Informatics, 5(3), pp. 887-901. doi: 10.51519/journalisi.v5i3.519.