[1] National Aphasia Association, Definition. http://www.aphasia.org/aphasia-definitions/
[2] Howea, Linda E. Worralla and Louise M. H. Hicksona, (2008) Interviews with People with Aphasia: Environmental Factors that Influence Their Community Participation, Aphasiology, 22, 1092-1120. http://dx.doi.org/10.1080/02687030701640941
[3] Aftonomos, L.B., Appelbaum, J.S. and Steele, R.D. (1999) Improving Outcomes for Persons with Aphasia in Advanced Community-Based Treatment Programs. Stroke, 30, 1370-1379. http://dx.doi.org/10.1161/01.STR.30.7.1370
[4] World Health Organization, International Classification of Functioning, Disability and Health (ICF). http://www.who.int/classifications/icf/icf_more/en/
[5] Yokohama Shitsugosho Tomono-kai (Yokohama Aphasia Partner Group in Yokohama City). (In Japanese) http://www.kounan-portal.com/3935/report.html
[6] 30th Anniversary Record of Yokohama Aphasia Partner Group (2015). (In Japanese)