Lua APA (7ú heag.)

Villanueva, M. A. (2002). GMA voids Piatco contract. Philippine Star.

Lua i Stíl Chicago (17ú heag.)

Villanueva, Marichu A. "GMA Voids Piatco Contract." Philippine Star 2002.

Lua MLA (9ú heag.)

Villanueva, Marichu A. "GMA Voids Piatco Contract." Philippine Star, 2002.

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