1. Ahmad, I. (2018). Proses Pembelajaran Digital dalam Era Revolusi Industri 4.0. http://kimia.unnes.ac.id/v1/wp-content/uploads/2018/02/V11-Dirjen-Belmawa-IA_Bel mawa-Rakernas-Ristekdikti-Medan-Final-16-01-18.pdf
2. Almara’beh, H., Amer, E. F., & Sulieman, A. (2016). Effectiveness of Multimedia Learning Tools in Education. International Journal of Advanced Research in Computer Science and Software Engineering, 5(12), 761–764. https://www.ijarcsse.com/12_December2015.html
3. Apriyanti, N., Nur, R. I., Rahim, S. S. A., & Shaharom, M. S. N. (2017). The Effectiveness of Using Multimedia in Teaching Physics to Gauge Student Learning Outcomes In The Senior High School in Indonesia. International Research Journal of Education and Sciences (IRJES), 1(2), 11–14. http://www.masree.info/wp-content/uploads/2017/10/IRJES-VOL-1-ISSUE-2-ARTICLE-3-1.pdf
4. Azizah, Z. F., Kusumaningtyas, A. A., & Anugraheni, A. D. (2018). Validasi preliminary product Fung-Cube pada pembelajaran fungi untuk siswa SMA. JURNAL BIOEDUKATIKA, 6(1), 15–21. https://doi.org/10.26555/bioedukatika.v6i1.7364
5. Baharin, N., Kamarudin, N., & Manaf, U. K. A. (2018). Integrating STEM Education Approach in Enhancing Higher Order Thinking Skills. International Journal of Academic Research in Business and Social Sciences, 8(7), 810–822. https://doi.org/10.6007/IJARBSS/v8-i7/4421