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Lua i Stíl Chicago (17ú heag.)IBON Foundation. Databank & Research Center. Primer on the Philippine Gold Mining Industry. Manila: IBON Research, 1979.
Lua MLA (9ú heag.)IBON Foundation. Databank & Research Center. Primer on the Philippine Gold Mining Industry. IBON Research, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.