Παραπομπή σε μορφή APA (7η εκδ.)

Abdulai, Y. S. (2003). The OPEC Fund and development cooperation in a changing world: Selected statements of Y. Seyyid Abdulai. OPEC Fund for International Development.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Abdulai, Y. Seyyid. The OPEC Fund and Development Cooperation in a Changing World: Selected Statements of Y. Seyyid Abdulai. Vienna: OPEC Fund for International Development, 2003.

Παραπομπή σε μορφή MLA (8th εκδ.)

Abdulai, Y. Seyyid. The OPEC Fund and Development Cooperation in a Changing World: Selected Statements of Y. Seyyid Abdulai. OPEC Fund for International Development, 2003.