Alunan, M. J. (2001). Serious problems threaten viability of fertilizer industry. Philippine Star.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlunan, Michael Jose. "Serious Problems Threaten Viability of Fertilizer Industry." Philippine Star 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAlunan, Michael Jose. "Serious Problems Threaten Viability of Fertilizer Industry." Philippine Star, 2001.
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