Alim, J.; Hermita, N.; Putra, Z. H.; Suroyo, S.; Charlina, C.; Witri, G.; Oktaviani, C. 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. CERS 2023, 3, 101-107.