IRRI. (1989). IRRI 1989: Planning for the 1990's. Manila: IRRI.
Chicago Style aipamenaIRRI. IRRI 1989: Planning for the 1990's. Manila: IRRI, 1989.
MLA aipamenaIRRI. IRRI 1989: Planning for the 1990's. Manila: IRRI, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.