Triassanti, Risa, and Prodhan Mahbub Ibna Seraj. “Project Based Approach Focusing on Students Speaking Skill Using Digital Storytelling”. The Proceedings of International Conference: Ronggolawe English Teaching Conference (RETCO), vol. 11, no. 1, Feb. 2023, pp. 24-35, http://prosiding.unirow.ac.id/index.php/retco/article/view/1788.