Doronila, A. (1997). The Infrastructure crisis. IN Analysis [column]. Philippine Daily Inquirer.
Chicago Style aipamenaDoronila, Amando. "The Infrastructure Crisis. IN Analysis [column]." Philippine Daily Inquirer 1997.
MLA aipamenaDoronila, Amando. "The Infrastructure Crisis. IN Analysis [column]." Philippine Daily Inquirer, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.