See Soo Yin, and Dr. Ching Thing Ho. “MANDARIN AS THE CHOSEN FOREIGN LANGUAGE COURSE AMONG LEARNERS OF FOREIGN LANGUAGES: A CASE STUDY”. Researchers World - International Refereed Social Sciences Journal, vol. 4, no. 3(1), Sept. 2021, pp. 81-89, https://www.researchersworld.com/index.php/rworld/article/view/968.