APA-referens (7:e uppl.)

Protacio, A. L. (1997). Drugs that can be taken during pregnancy. IN Doctor's corner [column]. Philippine Daily Inquirer.

Chicago-referens (17:e uppl.)

Protacio, Antonio L. "Drugs That Can Be Taken During Pregnancy. IN Doctor's Corner [column]." Philippine Daily Inquirer 1997.

MLA-referens (9:e uppl.)

Protacio, Antonio L. "Drugs That Can Be Taken During Pregnancy. IN Doctor's Corner [column]." Philippine Daily Inquirer, 1997.