Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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