Salaverria, L. B. (2017). Duterte signs law extending validity of passports to 10 years. Philippine Daily Inquirer.
Citazione stile Chigago Style (17a edizione)Salaverria, Leila B. "Duterte Signs Law Extending Validity of Passports to 10 Years." Philippine Daily Inquirer 2017.
Citatione MLA (9a ed.)Salaverria, Leila B. "Duterte Signs Law Extending Validity of Passports to 10 Years." Philippine Daily Inquirer, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.