Crisostomo, S. (2013). NPO to print 52M ballots two weeks ahead of elections. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Crisostomo, Sheila. "NPO to Print 52M Ballots Two Weeks Ahead of Elections." Philippine Star 2013.
Lua MLA (9ú heag.)Crisostomo, Sheila. "NPO to Print 52M Ballots Two Weeks Ahead of Elections." Philippine Star, 2013.
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