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Alim, J., Hermita, N., Putra, Z.H., Suroyo, S., Charlina, C., Witri, G. and Oktaviani, C. 2023. Training to Make Audible Books Based on Riau Malay Ethnomathematics as a Strengthening of Teachers’ Skills to Make Storybooks That Can Improve Literacy and Numeracy for Elementary School Students. Journal of Community Engagement Research for Sustainability. 3, 2 (Mar. 2023), 101–107. DOI:https://doi.org/10.31258/cers.3.2.101-107.