(2001). Operational lapses blamed for escape of Abu Sayyaf. Manila Bulletin.
Chicago Style aipamena"Operational Lapses Blamed for Escape of Abu Sayyaf." Manila Bulletin 2001.
MLA aipamena"Operational Lapses Blamed for Escape of Abu Sayyaf." Manila Bulletin, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.