Coles, M. (1984). Pasig River arrastre service now under PPA. Bulletin Today.
Chicagoスタイル(17版)引用形式Coles, Manuel. "Pasig River Arrastre Service Now Under PPA." Bulletin Today 1984.
MLA(9版)引用形式Coles, Manuel. "Pasig River Arrastre Service Now Under PPA." Bulletin Today, 1984.
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