Dela Peña, Z. B. (1997). State-owned firms topped '96 ranking. Manila Times.
Chicago Style aipamenaDela Peña, Zinnia B. "State-owned Firms Topped '96 Ranking." Manila Times 1997.
MLA aipamenaDela Peña, Zinnia B. "State-owned Firms Topped '96 Ranking." Manila Times, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.