Jameel Bin Mohamed Kamil, M., G. Ho Wan Ying, and M. Najib Bin Abdullah Sani. “Product Design Activity As a Process to Develop a Therapeutic Toys for Self-Managed Depression Among Adolescents”. Journal of Graphic Engineering and Design, vol. 13, no. 4, Dec. 2022, pp. 5-12, doi:10.24867/JGED-2022-4-005.