Sitanggang, Cansa Namira, and Maslathif Dwi Purnomo. 2025. “Indonesian EFL Students’ Perspective on Free4Talk: A Novice Vs. Expert User Study”. Jurnal Onoma: Pendidikan, Bahasa, Dan Sastra 11 (3):3783-96. https://doi.org/10.30605/onoma.v11i3.6844.