The Effectiveness of the Dual System Education Program at Vocational High Schools in Sidoarjo Regency: Efektivitas Program Pendidikan Sistem Ganda Di Sekolah Menengah Kejuruan Kabupaten Sidoarjo. ijemd 2023, 18 (1), 10.21070/ijemd.v21i.692. https://doi.org/10.21070/ijemd.v21i.692.