1. Korea Institute for Health and Social Affairs, 2020 National Survey of Older Koreans [Internet]. Available: http://www.mohw.go.kr/react/jb/sjb030301vw.jsp?PAR_MENU_ID=03&MENU_ID=032901&CONT_SEQ=366496&page=1
2. K. H. Chung, Y. H. Oh, N. H. Hwang, J. D. Kwon, and B. M. Park, Living Profiles of Older-Persons-Only Households and Policy Implications, Korea Institute for Health and Social Affairs, 2014.
3. Resident and therapist views of animal-assisted therapy: Implications for occupational therapy practice
4. KB Financial Group, 2021 Korea Pet Report : Status of Pet Households and Raising of Old Dogs [Internet]. Available:https://www.kbfg.com/kbresearch/report/reportView.do?reportId=2000160
5. National Information Society Agency, 2021 The Report on the Digital Divide, Ministry of Science and ICT, Korea, NIA VIII-RSE-C-21050, 2021.