IBON Foundation. (2000). The State of the Philippine environment (New ed.). IBON Foundation, Databank & Research Center.
Chicagoスタイル(17版)引用形式IBON Foundation. The State of the Philippine Environment. New ed. Sta. Mesa, Manila: IBON Foundation, Databank & Research Center, 2000.
MLA(9版)引用形式IBON Foundation. The State of the Philippine Environment. New ed. IBON Foundation, Databank & Research Center, 2000.
警告: この引用は必ずしも正確ではありません.