Yamzon, W. (1988). Postal chief resigns. Manila Bulletin.
Chicago Style aipamenaYamzon, Wilma. "Postal Chief Resigns." Manila Bulletin 1988.
MLA aipamenaYamzon, Wilma. "Postal Chief Resigns." Manila Bulletin, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.