DEWI ISHAK, SETYO UTOYO, and UMMYSSALAM AT.AD. “DEVELOPMENT OF CENTRAL LEARNING MODEL NATURAL MATERIALS THROUGH THE PAUD SCIENCE SCIENCE APPROACH IN THE LIMBOTO”. JournalNX - A Multidisciplinary Peer Reviewed Journal, vol. 6, no. 07, Feb. 2021, pp. 99-105, https://repo.journalnx.com/index.php/nx/article/view/1046.