Calumpita, R. E. (2005). Govt to charge more for ground water use. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCalumpita, Ronnie E. "Govt to Charge More for Ground Water Use." Manila Times 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCalumpita, Ronnie E. "Govt to Charge More for Ground Water Use." Manila Times, 2005.
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