Arbianingsih, A., H. Huriati, S. Musnayni, N. Afiifah, and A. A. Amal. “Brain Gym Effectively Reduces Anxiety in School- and Preschool-Aged Children in Hospitals”. Jurnal Keperawatan Indonesia, vol. 24, no. 3, Nov. 2021, pp. 140-8, doi:10.7454/jki.v24i3.1013.