Echeminada, P. (2010). 'Poll surveys undermining democratic processes'. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Echeminada, Perseus. "'Poll Surveys Undermining Democratic Processes'." Philippine Star 2010.
Lua MLA (9ú heag.)Echeminada, Perseus. "'Poll Surveys Undermining Democratic Processes'." Philippine Star, 2010.
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