Nurhayati, Sri Hasih, et al. “Need Analysis of E-Module Based on the Theory of Conceptual Change in Earth and Space Material for Class X of Vocational School in the Sumatra”. Jurnal Penelitian Pendidikan IPA, vol. 10, no. 8, Aug. 2024, pp. 6198-05, doi:10.29303/jppipa.v10i8.7637.