Hakiim, Luqmanul, et al. “Enhancing Scientific Literacy on Earth and Solar System Concepts Through the Reading to Learn (R2L) Model: A Classroom Action Research Study”. Orbital: The Electronic Journal of Chemistry, vol. 17, no. 4, Sept. 2025, pp. 409-14, https://doi.org/10.17807/orbital.v17i4.23066.