(1997). Preserving the country's water resources. IN Editorial [column]. Manila Bulletin.
Chicagoスタイル(17版)引用形式"Preserving the Country's Water Resources. IN Editorial [column]." Manila Bulletin 1997.
MLA(9版)引用形式"Preserving the Country's Water Resources. IN Editorial [column]." Manila Bulletin, 1997.
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