Azis, A., I. Satrawati, A. Taufiq, Y. Jubhari, and D. R. Mahmudah. “Critical Thinking Tasks in ESP Speaking Classes: A Qualitative Exploration of 21st Century Skills Development”. EDULEC : Education, Language, and Culture Journal, vol. 5, no. 2, Aug. 2025, pp. 128-36, doi:10.56314/edulec.v5i2.341.