De Leon, I. C. (2001). Solid Waste Law signed to Address garbage problem. Manila Bulletin.
Chicagoスタイル(17版)引用形式De Leon, Isabel C. "Solid Waste Law Signed to Address Garbage Problem." Manila Bulletin 2001.
MLA(9版)引用形式De Leon, Isabel C. "Solid Waste Law Signed to Address Garbage Problem." Manila Bulletin, 2001.
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