(2008). Achieving Unprecedented Milestones: Delivering quality, reasonably priced water to the public and alleviating poverty. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Achieving Unprecedented Milestones: Delivering Quality, Reasonably Priced Water to the Public and Alleviating Poverty." Manila Bulletin 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Achieving Unprecedented Milestones: Delivering Quality, Reasonably Priced Water to the Public and Alleviating Poverty." Manila Bulletin, 2008.
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