Παραπομπή σε μορφή APA (7η εκδ.)

OPEC Fund for International Development. (2017). Annual Report 2017: OFID The OPEC Fund for international development. OPEC Fund for international development.

Παραπομπή σε μορφή Chicago (17η εκδ.)

OPEC Fund for International Development. Annual Report 2017: OFID The OPEC Fund for International Development. Vienna: OPEC Fund for international development, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

OPEC Fund for International Development. Annual Report 2017: OFID The OPEC Fund for International Development. OPEC Fund for international development, 2017.