Παραπομπή σε μορφή APA (7η εκδ.)

Byerlee, D., & Alex, G. E. (1998). Strengthening national agricultural research systems: Policy issues and good practice. World Bank.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Byerlee, Derek, και Gary E. Alex. Strengthening National Agricultural Research Systems: Policy Issues and Good Practice. Washington, DC: World Bank, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Byerlee, Derek, και Gary E. Alex. Strengthening National Agricultural Research Systems: Policy Issues and Good Practice. World Bank, 1998.