Alunan, M. J. (2001). Serious problems threaten viability of fertilizer industry. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Alunan, Michael Jose. "Serious Problems Threaten Viability of Fertilizer Industry." Philippine Star 2001.
Lua MLA (9ú heag.)Alunan, Michael Jose. "Serious Problems Threaten Viability of Fertilizer Industry." Philippine Star, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.