Fatqurhohman, Fatqurhohman, et al. “Pengembangan Bahan Ajar Digital Interaktif Menggunakan Flip PDF Professional Untuk Pembelajaran Geometri SMP”. SMARTH: Journal of Mathematics Education and Learning, vol. 2, no. 2, Oct. 2026, pp. 131-44, https://doi.org/10.66031/smarth.v2i2.717.