Lua APA (7ú heag.)

Calumpita, R. E. (2003). QC cops charged with extortion. Manila Times.

Lua i Stíl Chicago (17ú heag.)

Calumpita, Ronnie E. "QC Cops Charged with Extortion." Manila Times 2003.

Lua MLA (9ú heag.)

Calumpita, Ronnie E. "QC Cops Charged with Extortion." Manila Times, 2003.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.