(2001). Erap vows support for Arroyo but vows to retake presidency if GMA bungles the job. Philippine Star.
Chicago Style aipamena"Erap Vows Support for Arroyo but Vows to Retake Presidency If GMA Bungles the Job." Philippine Star 2001.
MLA aipamena"Erap Vows Support for Arroyo but Vows to Retake Presidency If GMA Bungles the Job." Philippine Star, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.