Harahap, O. F. M., and N. H. Nasution. “The Effect of Media Mind Mapping On the Ability to Write Narrative Text”. Jurnal Kesehatan Ilmiah Indonesia (Indonesian Health Scientific Journal), vol. 3, no. 2, Dec. 2018, pp. 76-85, https://www.jurnal.unar.ac.id/index.php/health/article/view/53.