Casayuran, M. B. (2015). Sotto to Poe: Seek the presidency as an independent. Manila Bulletin.
Chicago-viite (17. p.)Casayuran, Mario B. "Sotto to Poe: Seek the Presidency as an Independent." Manila Bulletin 2015.
MLA-viite (9. p.)Casayuran, Mario B. "Sotto to Poe: Seek the Presidency as an Independent." Manila Bulletin, 2015.
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