Mardiana, N., S. Y. Prayogi, S. S, S. Haslina, and M. Harizan. “Android-Based Digital Teaching Materials As Online Learning in New Normal Era to Improve Physics HOTS for High School Students”. Journal of Natural Science and Integration, vol. 5, no. 1, Apr. 2022, pp. 90-95, doi:10.24014/jnsi.v5i1.15468.