APA引文

Agustin, C. L. (2001). A national ID number system. IN Opinion [column]. Philippine Star.

Chicago Style (17th ed.) Citation

Agustin, Carlos L. "A National ID Number System. IN Opinion [column]." Philippine Star 2001.

MLA引文

Agustin, Carlos L. "A National ID Number System. IN Opinion [column]." Philippine Star, 2001.

警告：這些引文格式不一定是100％准確.