Mercado, J. L. (1999). Old problem bug bustling Cebu Ecozone. Philippine Star.
Chicagoスタイル(17版)引用形式Mercado, Juan L. "Old Problem Bug Bustling Cebu Ecozone." Philippine Star 1999.
MLA(9版)引用形式Mercado, Juan L. "Old Problem Bug Bustling Cebu Ecozone." Philippine Star, 1999.
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