APA-referens (7:e uppl.)

Singapore Council of Social Service. (1979). Social service directory ([2d ed.].). Singapore Council of Social Service.

Chicago-referens (17:e uppl.)

Singapore Council of Social Service. Social Service Directory. [2d ed.]. Singapore: Singapore Council of Social Service, 1979.

MLA-referens (8:e uppl.)

Singapore Council of Social Service. Social Service Directory. [2d ed.]. Singapore Council of Social Service, 1979.

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