IBON Databank Philippines. (1988). Directory of TNC's in the Philippines. IBON Databank Philippines.
Chicagoスタイル(17版)引用形式IBON Databank Philippines. Directory of TNC's in the Philippines. Manila: IBON Databank Philippines, 1988.
MLA(9版)引用形式IBON Databank Philippines. Directory of TNC's in the Philippines. IBON Databank Philippines, 1988.
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