A. Casiple, E. . Bolongaita, and M. Bautista, “Challenges Encountered by the Kindergarten Teachers Using Printed Modular Instruction”, Int. Multidiscip. J. Res. Innov. Sustain. Excell. , vol. 2, no. 6, pp. 732–747, Jun. 2025, doi: 10.5281/zenodo.15674730.