RITONGA, Abdul Kadir. Program Development as an Alternative Improvement of Service Quality and Results of Vocational Education. International Journal of Social Sciences & Educational Studies, [S. l.], v. 4, n. 4, p. 22–26, 2018. DOI: 10.23918/ijsses.v4i4p22. Disponível em: https://ijsses.tiu.edu.iq/index.php/ijsses/article/view/376. Acesso em: 14 may. 2025.