Παραπομπή σε μορφή APA (7η εκδ.)

(1990). Management of cataract in primary health care services. World Health Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Management of Cataract in Primary Health Care Services. Geneva: World Health Organization, 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

Management of Cataract in Primary Health Care Services. World Health Organization, 1990.