Offemaria, R. (1997). Red tide harms sustainable development of marine ecosystems. Manila Chronicle.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOffemaria, Rodel. "Red Tide Harms Sustainable Development of Marine Ecosystems." Manila Chronicle 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOffemaria, Rodel. "Red Tide Harms Sustainable Development of Marine Ecosystems." Manila Chronicle, 1997.
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