Nurhidayah, Ninik, Muchammad Syamsulhadi, Sapja Anantanyu, and Ari Probandari. 2018. “Characteristics of Leisure Participation Amongst Older Adults in Karanganyar Central Java Indonesia”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 39 (2):29-39. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9038.