SITUMORANG, BENYAMIN. “BEBERAPA FAKTOR PENENTU KOMPETENSI GURU SD PESERTA PLPG Di PROPINSI SUMATERA UTARA”. JURNAL HANDAYANI PGSD FIP UNIMED 1, no. 2 (September 4, 2014). Accessed January 31, 2025. http://103.242.233.34/index.php/handayani/article/view/1272.