Rahayu, D. Y. S., R. D. Usman, N. Umar, and D. P. Putri. “Education Using Booklets to Help Families Prevent Infectious Diseases in the Elderly”. 2022. Health Information : Jurnal Penelitian, vol. 14, no. 1, June 2022, pp. 27-37, doi:10.36990/hijp.v14i1.448.