Guerrero, A. M. (2002). A wealth of eco-cultural attractions in Ilocos region. Philippine Daily Inquirer.
Chicago Style aipamenaGuerrero, Amadis Ma. "A Wealth of Eco-cultural Attractions in Ilocos Region." Philippine Daily Inquirer 2002.
MLA aipamenaGuerrero, Amadis Ma. "A Wealth of Eco-cultural Attractions in Ilocos Region." Philippine Daily Inquirer, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.