Palangchao, H. (2003). 2 Lepanto miner unions go on strike. Manila Times.
Lua i Stíl Chicago (17ú heag.)Palangchao, Harley. "2 Lepanto Miner Unions Go on Strike." Manila Times 2003.
Lua MLA (9ú heag.)Palangchao, Harley. "2 Lepanto Miner Unions Go on Strike." Manila Times, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.