Elfira, Eqlima, 		Nurbaiti, Nurbaiti, AND 		Tumanggor, Roxsana.
" Effect of Progressive Muscle Relaxation on The Functional Status of The Elderly in The Integrated Services Unit of The Elderly Binjai" <em>Jurnal Keperawatan Respati Yogyakarta</em> [Online], Volume 7 Number 2 (31 May 2020)