(1995). Ibon facts & figures 1994, 1995. Ibon Philippines Databank and Research Center.
Chicagoスタイル(17版)引用形式Ibon Facts & Figures 1994, 1995. Manila: Ibon Philippines Databank and Research Center, 1995.
MLA(9版)引用形式Ibon Facts & Figures 1994, 1995. Ibon Philippines Databank and Research Center, 1995.
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