“Efektivitas Teknik Deep Breathing Dalam Menurunkan Tingkat Kecemasan Siswa : The Effectiveness Of Deep Breathing Technique In Reducing Students’ Anxiety Levels ”, JPPBK, vol. 2, no. 1, hlm. 71–77, Apr 2026, Diakses: Agu 26, 2026. Tersedia pada: https://journal.matappa.ac.id/index.php/JPPBK/article/view/4459