Fitriani, N. K., T. Susanto, and F. Kurdi. “The Use of Guided Imagery Therapy for Insomnia Prevention in the Elderly: Literature Review”. Jurnal Kesehatan Komunitas Indonesia, vol. 3, no. 3, Oct. 2023, pp. 253-66, doi:10.58545/jkki.v3i3.107.