KHOTIMAH K. PENGEMBANGAN BUKU AJAR SISWA PROGRAMMABLE LOGIC CONTROLLER BERBASIS PROBLEM BASED LEARNING DI SMK KAL-1 SURABAYA. JPTE [Internet]. 4Sep.2017 [cited 17May2024];6(3). Available from: https://ejournal.unesa.ac.id/index.php/jurnal-pendidikan-teknik-elektro/article/view/21533