Shandy, S., C. Charles, and E. . Romy. “Motivation and Challenges in Learning Mandarin For Non-Chinese Descent High School Students at Methodist-6 School Medan”. Jurnal Indonesia Sosial Sains, vol. 6, no. 6, June 2025, pp. 1881-92, doi:10.59141/jiss.v6i6.1762.