Nainggolan, Ananda Imanuela, Widyastuti Widyastuti, and Ahmad Ridfah. “Efektivitas Pelatihan Relaksasi Otot Progresif Terhadap Penurunan Kecemasan Primary Caregiver Anak Penderita Leukemia”. Humanitas (Jurnal Psikologi) 4, no. 3 (December 30, 2020): 297–307. Accessed March 28, 2024. https://journal.maranatha.edu/index.php/humanitas/article/view/2526.