Yakuti, Nur, et al. “PERBEDAAN ANTARA METODE STEM DAN METODE DISCOVERY LEARNING TERHADAP HASIL UJI KOMPETENSI KEAHLIAN SISWA PADA PERAWATAN BERKALA MOBIL DI SMK NEGERI 3 BONDOWOSO”. Journal of Education Technology and Inovation, vol. 4, no. 1, Aug. 2021, pp. 65-75, http://jurnal.unipar.ac.id/index.php/jeti/article/view/592.