Riantiarno, F., L. Zuhriyah, and H. D. Windarwati. “‘Own Goodness and Service for Others’ A Motivation to Serve People With Mental Disorders: Systematic Review”. International Journal of Science and Society, Vol. 2, no. 1, May 2020, pp. 345-5, doi:10.54783/ijsoc.v2i1.84.