Ardila, Masandra Citra, Tiyas Saputri, Edi Pujo Basuki, and Mujad Didien Afandi. 2026. “The Impact of Sequential Spelling Instruction on Writing Fluency in Elementary ESL Students”. RIGGS: Journal of Artificial Intelligence and Digital Business 5 (2):17668-77. https://doi.org/10.31004/riggs.v5i2.11746.