Sugesti, Nunik, Sugirin Sugirin, Joko Priyana, and Ella Wulandari. “Needs Analysis on Developing Mobile-Phone Based Learning Materials to Accelerate Students’ Mastery of English Vocabulary”. Journal of Languages and Language Teaching 11, no. 4 (October 16, 2023): 748–761. Accessed August 15, 2025. https://e-journal3.undikma.ac.id/index.php/jollt/article/view/9127.