Saputra, D. B., E. Saputra, L. Haryana, and A. Puspa. “Students’ Difficulties in Speaking English As a Foreign Language: Undergraduate Students’ Voices”. Metathesis: Journal of English Language, Literature, and Teaching, vol. 7, no. 1, July 2023, pp. 110-2, doi:10.31002/metathesis.v7i1.369.