Mercado, J. L. (1999). Old problem bug bustling Cebu Ecozone. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Mercado, Juan L. "Old Problem Bug Bustling Cebu Ecozone." Philippine Star 1999.
Lua MLA (9ú heag.)Mercado, Juan L. "Old Problem Bug Bustling Cebu Ecozone." Philippine Star, 1999.
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