Lotilla, R. P. M. (2015). Safeguarding our island-studded sea. IN Current events [column]. Forbes Philippines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLotilla, Raphael Perpetuo M. "Safeguarding Our Island-studded Sea. IN Current Events [column]." Forbes Philippines 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLotilla, Raphael Perpetuo M. "Safeguarding Our Island-studded Sea. IN Current Events [column]." Forbes Philippines, 2015.
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