Herman, M. Ibrahim, and M. Yahrif, “Increasing Students’ Vocabulary Mastery by Using Mind Mapping”, j.il.pend.bhs.sas.math., vol. 8, no. 1, pp. 15–25, Jun. 2022, Accessed: Oct. 12, 2025. [Online]. Available: https://journal.fkip-unilaki.ac.id/index.php/dia/article/view/32