Intan Kumalasari. “Designing a Web Based Application to Memorize Korean Vocabulary Using Flashcards”. Riau Jurnal Teknik Informatika 4, no. 1 (March 31, 2025): 108 – 113 . Accessed June 25, 2026. https://journal.upp.ac.id/index.php/rjti/article/view/3268.