P. Serin, N. Kartika, and S. . Machdalena, “The Decline in the Popularity of the Sundanese Language and Culture among Sundanese Ethnic Youth”, JOLLS. Lang. Liter. Studies, vol. 6, no. 2, pp. 840–854, Jun. 2026, doi: 10.36312/jolls.v6i2.4765.