ZAENAL, NUR EKAWATI, NUNIK IRZATI MUHAJI, NATALIA DATU, and RINA NURHIDAYATI. JournalNX - A Multidisciplinary Peer Reviewed Journal, vol. 6, no. 06, Feb. 2021, pp. 604-10, https://repo.journalnx.com/index.php/nx/article/view/1311.