1. American Association for the Advancement of Science. (1993). Project 2061: Benchmarks for science literacy. http://tinyurl.com/4kpjhe7h
2. Anderson, M. (2011, April 1). The Early and elementary years / the leap into 4th Grade. http://tinyurl.com/2cdskjyp
3. Costa, A. L., & Kallick, B. (Eds.). (2000). Habits of mind: A developmental series. Association for Supervision and Curriculum Development.
4. Dare to Learn. (2022, July 1). Modul belajar literasi dan numerasi jenjang SD kelas 4 tema 1 2 3 4 5 6 7 8 9 [Learning modules for literacy and numeracy for elementary school grade 4th theme 1 2 3 4 5 6 7 8 9]. https://tinyurl.com/y4p2hcuh
5. Gozali, I., Lie, A., & Tamah, S. M. (2023). Examining Language Teachers’ Change in TPACK-HOTS Self-Perception during the COVID-19 Pandemic in Indonesia. Computer Assisted Language Learning Electronic Journal, 24(1), 280-304.