PRASETYO, T. A.; PASARIBU, M.; GAOL, T. L.; TURNIP, T. N.; DAMANIK, J. Y.; PANJAITAN, A.; PANE, M.; TOBING, N. F. L.; PARDOSI, L. M.; TIMOTHY, T.; SIHOMBING, Y. Development of DelTalk (an English learning application) using Agile Method. Jurnal Teknologi Informasi dan Pendidikan, [S. l.], v. 16, n. 1, p. 259–273, 2023. DOI: 10.24036/jtip.v16i1.662. Disponível em: http://tip.ppj.unp.ac.id/index.php/tip/article/view/662. Acesso em: 7 nov. 2025.