(2002). Ibon facts and figures 2002. Ibon Foundation Databank and Research Center.
Cita Chicago (17th ed.)Ibon Facts and Figures 2002. Manila: Ibon Foundation Databank and Research Center, 2002.
Cita MLA (9th ed.)Ibon Facts and Figures 2002. Ibon Foundation Databank and Research Center, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.