APA aipamena

Valencia, L. R. (2001). Tough days ahead for RP airline industry. Manila Times.

Chicago Style aipamena

Valencia, Lynda R. "Tough Days Ahead for RP Airline Industry." Manila Times 2001.

MLA aipamena

Valencia, Lynda R. "Tough Days Ahead for RP Airline Industry." Manila Times, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.