Cahiles, B. A. (1998). MRT line 4 cost upgraded by 40%. Manila Bulletin.
Chicagoスタイル(17版)引用形式Cahiles, Bernie A. "MRT Line 4 Cost Upgraded by 40%." Manila Bulletin 1998.
MLA(9版)引用形式Cahiles, Bernie A. "MRT Line 4 Cost Upgraded by 40%." Manila Bulletin, 1998.
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