(1999). Ibon facts and figures 1999. Ibon Foundation Databank and Research Center.
芝加哥风格引文Ibon Facts and Figures 1999. Manila: Ibon Foundation Databank and Research Center, 1999.
MLA引文Ibon Facts and Figures 1999. Ibon Foundation Databank and Research Center, 1999.
警告：这些引文格式不一定是100％准确.