Yap, R. C. (2003). Global warming, more dangerous than terrorism. IN Commentary [column]. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Yap, Roberto C. "Global Warming, More Dangerous than Terrorism. IN Commentary [column]." Philippine Daily Inquirer 2003.
MLA-referens (9:e uppl.)Yap, Roberto C. "Global Warming, More Dangerous than Terrorism. IN Commentary [column]." Philippine Daily Inquirer, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.