Alunan, M. J. (2001). Serious problems threaten viability of fertilizer industry. Philippine Star.
Chicagoスタイル(17版)引用形式Alunan, Michael Jose. "Serious Problems Threaten Viability of Fertilizer Industry." Philippine Star 2001.
MLA(9版)引用形式Alunan, Michael Jose. "Serious Problems Threaten Viability of Fertilizer Industry." Philippine Star, 2001.
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