Horario, R. A. (2012). Resign, Sen. Cayetano challenges lead prosecutor Tupas. Manila Times.
Chicago Style aipamenaHorario, Ritchie A. "Resign, Sen. Cayetano Challenges Lead Prosecutor Tupas." Manila Times 2012.
MLA aipamenaHorario, Ritchie A. "Resign, Sen. Cayetano Challenges Lead Prosecutor Tupas." Manila Times, 2012.
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