Suwardiyanto, D., J. A. Prasetyo, U. N. Aliza, and M. D. . Ayatullah. “Implementing Mail Administration Using the Codeigniter Framework”. Journal of Telecommunication Network (Jurnal Jaringan Telekomunikasi), vol. 12, no. 4, Dec. 2022, pp. 297-11, doi:10.33795/jartel.v12i4.676.