Putriana, Diah Khrisma, Aditya Putra Pratama Santosa, and Inge Dhamanti. 2022. “Comparative Study of Contact Tracing Applications Development in Singapore and Indonesia: (Case Study: TraceTogether and PeduliLindungi)”. Journal of Health Science and Prevention 6 (1). https://jurnalfpk.uinsby.ac.id/index.php/jhsp/article/view/689.