APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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