Aurora Tjokro, Anita, Muhammad Aris Ichwanto, Eko Suwarno, and Tee Tze Kiong. “Effectiveness of Project-Based Learning Models in Vocational Schools: A Study on Productive Subjects”. Journal of Educational Management and Strategy 2, no. 2 (December 31, 2023): 211–222. Accessed October 3, 2025. https://journal.makwafoundation.org/index.php/jemast/article/view/292.