Batubara, Riska Widiyanita, Amrin Batubara, and Tri Yuli Ardiyansah. 2025. “Enhancing Idiomatic Competence through WhatsApp: A Comparative Study of Mobile and Traditional Teaching Methods”. Jurnal Evaluasi Dan Pembelajaran 6 (2):88-97. https://doi.org/10.52647/jep.v6i2.255.