Ravi, Ahmad, and Betti Ses Eka Polonia. 2022. “The Use Emb (Engineering Mechanics Book) Mobile App To Train Students’ Digital Literacy Skills During Covid-19 Pandemic”. Tarbiyah : Jurnal Ilmiah Kependidikan 10 (2):103-14. https://doi.org/10.18592/tarbiyah.v10i2.5542.