Philippine Association for the Retarded & Abad, C. M. (1973). Hope for the retarded in Asia. Philippine Association for the Retarded.
Chicago-referens (17:e uppl.)Philippine Association for the Retarded och Conchita M. Abad. Hope for the Retarded in Asia. Manila: Philippine Association for the Retarded, 1973.
MLA-referens (9:e uppl.)Philippine Association for the Retarded och Conchita M. Abad. Hope for the Retarded in Asia. Philippine Association for the Retarded, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.