Sy, M. (2010). Miriam files proposed Magna Carta for Call Center. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Sy, Marvin. "Miriam Files Proposed Magna Carta for Call Center." Philippine Star 2010.
Lua MLA (9ú heag.)Sy, Marvin. "Miriam Files Proposed Magna Carta for Call Center." Philippine Star, 2010.
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