Tubeza, P. C. (2002). What happened to my promotion, NBI official ask. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Tubeza, Philip C. "What Happened to My Promotion, NBI Official Ask." Philippine Daily Inquirer 2002.
MLA-referens (9:e uppl.)Tubeza, Philip C. "What Happened to My Promotion, NBI Official Ask." Philippine Daily Inquirer, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.