Singapore. Ministry of Social Affairs, Singapore Council of Social Service, & International Year of Disabled Persons (1981). (1981). International Year of Disabled Persons: Full participation and integration : rights issue. National Co-ordinating Committee for the International Year of Disabled Persons.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Singapore. Ministry of Social Affairs, Singapore Council of Social Service, و International Year of Disabled Persons (1981). International Year of Disabled Persons: Full Participation and Integration : Rights Issue. [Singapore: National Co-ordinating Committee for the International Year of Disabled Persons, 1981.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Singapore. Ministry of Social Affairs, et al. International Year of Disabled Persons: Full Participation and Integration : Rights Issue. National Co-ordinating Committee for the International Year of Disabled Persons, 1981.