Pambudi, Sigit. 2018. “Upaya Meningkatkan Profesionalisme Guru Melalui Pelatihan Penelitian Tindakan Kelas Di SMK Muhammadiyah 1 Bantul”. Elinvo (Electronics, Informatics, and Vocational Education) 3 (2):61-64. https://doi.org/10.21831/elinvo.v3i2.23460.