Ariefianto, Lutfi, Rody Putra Sartika, and Nurul Faizah. “Project-Based STEAM Learning in Non-Formal Vocational Education: Occupational Korean Proficiency and Delayed Work-Culture Understanding”. Journal of Nonformal Education 12, no. 2 (August 15, 2026): 280–289. Accessed September 5, 2026. https://journal.unnes.ac.id/journals/jone/article/view/59101.