Casayuran, M. B. (1997). Senators affirm stand against charter change. Manila Bulletin.
Chicago Style aipamenaCasayuran, Mario B. "Senators Affirm Stand Against Charter Change." Manila Bulletin 1997.
MLA aipamenaCasayuran, Mario B. "Senators Affirm Stand Against Charter Change." Manila Bulletin, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.