Habibah, Jihan Fara, and Siti Asmiyah. “Roleplay and Students’ Confidence in Speaking in English: A Case Study in a Public High School in Surabaya: English”. The Proceedings of International Conference: Ronggolawe English Teaching Conference (RETCO), vol. 11, no. 1, Feb. 2023, pp. 85-97, http://prosiding.unirow.ac.id/index.php/retco/article/view/1714.