https://ejournal.poltekkes-smg.ac.id/ojs/index.php/link/article/view/254/194
https://ejournal.poltekkes-smg.ac.id/ojs/index.php/link/article/view/327/264
Klik untuk mengakses 162_Correlation.pdf
http://ejournal.poltekkes-smg.ac.id/ojs/index.php/link/article/viewFile/2925/574
http://jos.unsoed.ac.id/index.php/kesmasindo/article/view/354/488
https://ejournal.poltekkes-smg.ac.id/ojs/index.php/jkm/article/view/5849/1700
http://www.degres.pw/index.php/asbl/article/view/118/122
https://nveo.org/index.php/journal/article/view/2442/2143
https://books.google.co.id/books/about/Asuhan_Keperawatan_Gerontik.html?id=58gFDgAAQBAJ&redir_esc=y
https://www.jclmm.com/index.php/journal/article/view/842/660
Sugeng Riyadi 