Zainol, S. N. H. M. ., A. . Yaacob, and S. S. . Abdullah. “Needs Analysis for Developing a Flipbook-Based Explicit Vocabulary Module in CEFR-Aligned Primary ESL”. International Journal of Innovative Research and Scientific Studies, vol. 8, no. 6, Sept. 2025, pp. 2702-15, doi:10.53894/ijirss.v8i6.10196.