Prasetyo T, Pasaribu M, Gaol T, Turnip T, Damanik J, Panjaitan A, Pane M, Tobing N, Pardosi L, Timothy T, Sihombing Y. Development of DelTalk (an English learning application) using Agile Method. JTIP [Internet]. 25Oct.2023 [cited 21Nov.2024];16(1):259-73. Available from: http://tip.ppj.unp.ac.id/index.php/tip/article/view/662