Bellido, Willyn A., and Felipa M. Rico. “Instructional Material Development for Vocabulary Enhancement of Grade 9 Students of Botolan National High School”. International Journal of Multidisciplinary: Applied Business and Education Research, vol. 2, no. 12, Dec. 2021, pp. 1416-23, https://doi.org/10.11594/10.11594/ijmaber.02.12.15.