SISTEM INFORMASI ANTRIAN PROGRESIF PADA BADAN PENGELOLAAN PAJAK DAN RETRIBUSI DAERAH UPT PPD MEDAN SELATAN. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 6, n. 3, p. 663–668, 2023. DOI: 10.54314/jssr.v6i3.1471. Disponível em: https://goretanpena.com/jurnal/index.php/JSSR/article/view/1471.. Acesso em: 4 aug. 2026.