Sitoresmi, M., and W. Wella. “Chatbot Kantor Pelayanan Pajak Pratama Cikupa Pada Platform Line”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi, Vol. 9, no. 1, July 2020, pp. 33-39, doi:https://doi.org/10.31937/si.v9i1.1247.