Efa Eret, D. ., V. A. Tanda, and B. S. . Chumbow. “Assessing Korop Vitality on the Basis of Intergenerational Language Transmission”. JOURNAL OF ARTS AND HUMANITIES, vol. 3, no. 1, Nov. 2020, pp. 212-31, https://fajournaluba.com/index.php/jah/article/view/16.