Ndruru NIS, Damanik HR, Lase F, Lase JF- era. EFEKTIVITAS SOLUTION FOCUSED BRIEF THERAPY (SFBT) UNTUK MENGURANGI PROKRASTINASI AKADEMIK SISWA DI SMK NEGERI 1 LOLOMATUA. Secondary J. Inov. Pendidik. Menengah [Internet]. 2026Feb.26 [cited 2026Mar.5];6(2):344-53. Available from: https://jurnalp4i.com/index.php/secondary/article/view/9543