Hayatin, Nur, Bayu Mavindo, and Eko Budi Cahyono. 2017. “The Development of Mobile Application Based Customer Service System in Bank Sampah Malang”. Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control 2 (4):291 -98. https://doi.org/10.22219/kinetik.v2i4.266.