Nurmala, I., Reza, A., Apriansyah Hutagalung, C., Pattiasina , P.J. and Malintang, J. 2024. Strengthening English Language Learning through Artificial Intelligence-Based Mobile Applications: A Comparative Study in Formal and Informal Contexts. International Journal of Language and Ubiquitous Learning. 2, 4 (Dec. 2024), 470–479. DOI:https://doi.org/10.70177/ijlul.v2i4.1764.