Soenarto, Soenarto, Muhammad Mustaghfirin Amin, and Kumaidi Kumaidi. “An Evaluation of Vocational High Schools in Indonesia: A Comparison Between Four-Year and Three-Year Programs”. REID (Research and Evaluation in Education) 3, no. 2 (March 27, 2018): 106–113. Accessed May 8, 2025. https://journal.uny.ac.id/index.php/reid/article/view/17077.