Purwaningrum D. Studi Komparasi Kompetensi Profesional antara Guru Tersertifikasi Melalui Portofolio dan PLPG. JDMP [Internet]. 2017 Feb. 7 [cited 2025 Jun. 15];1(1):24-33. Available from: https://journal.unesa.ac.id/index.php/jdmp/article/view/558