COŞKUN ŞİMŞEK , D., and M. ŞAHİNOĞLU. “Stress-Relieving Effects of Colour-by-Number Mandalas in Children Hospitalised Due to a Chronic Disease”. GEVHER NESIBE JOURNAL OF MEDICAL AND HEALTH SCIENCES, vol. 8, no. 1, Feb. 2023, pp. 220-7, doi:10.5281/zenodo.7602648.