Vella, W. M., and L. Yarni. “Loneliness Problem Pada Lansia Di Panti Jompo Jasa Ibu Jorong Lakung Kenagarian Situjuh Batua”. Ranah Research : Journal of Multidisciplinary Research and Development, Vol. 4, no. 1, Nov. 2021, pp. 50-63, doi:10.38035/rrj.v4i1.424.