Rahmawati N, Hidayatillah NS, Amelia R. An Analysis of Student’ Difficulties in Vocabulary Mastery: A Case Study at English Club of SMAN 7 Kota Serang. JKIP [Internet]. 2023Oct.31 [cited 2025Aug.1];4(1):9-19. Available from: http://journal.al-matani.com/index.php/jkip/article/view/695