Esguerra, C. V. (2013). 90-day senatorial campaign starts, UNA questions ‘daang matuwid’ line. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Esguerra, Christian V. "90-day Senatorial Campaign Starts, UNA Questions ‘daang Matuwid’ Line." Philippine Daily Inquirer 2013.
MLA-referens (9:e uppl.)Esguerra, Christian V. "90-day Senatorial Campaign Starts, UNA Questions ‘daang Matuwid’ Line." Philippine Daily Inquirer, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.