Yap, R. (2003). Ratify the Kyoto Protocol. IN Commentary [column]. Philippine Daily Inquirer.
芝加哥风格引文Yap, Roberto. "Ratify the Kyoto Protocol. IN Commentary [column]." Philippine Daily Inquirer 2003.
MLA引文Yap, Roberto. "Ratify the Kyoto Protocol. IN Commentary [column]." Philippine Daily Inquirer, 2003.
警告：这些引文格式不一定是100％准确.