APA-referens (7:e uppl.)

Co, B. G. (2001). Objection to drug testing of drivers. Philippine Star.

Chicago-referens (17:e uppl.)

Co, Benjamin G. "Objection to Drug Testing of Drivers." Philippine Star 2001.

MLA-referens (9:e uppl.)

Co, Benjamin G. "Objection to Drug Testing of Drivers." Philippine Star, 2001.