Gatdula, D. (2001). LPG cylinder makers push for stiff penalties vs unscrupulous operators. Philippine Star.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGatdula, Donnabelle. "LPG Cylinder Makers Push for Stiff Penalties Vs Unscrupulous Operators." Philippine Star 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGatdula, Donnabelle. "LPG Cylinder Makers Push for Stiff Penalties Vs Unscrupulous Operators." Philippine Star, 2001.
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