Calumpita, R. E. (2004). Maynilad: Brace for less water in coming days. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCalumpita, Ronnie E. "Maynilad: Brace for Less Water in Coming Days." Manila Times 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCalumpita, Ronnie E. "Maynilad: Brace for Less Water in Coming Days." Manila Times, 2004.
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