Protacio, A. L. (1997). Drugs that can be taken during pregnancy. IN Doctor's corner [column]. Philippine Daily Inquirer.
Chicago-viite (17. p.)Protacio, Antonio L. "Drugs That Can Be Taken During Pregnancy. IN Doctor's Corner [column]." Philippine Daily Inquirer 1997.
MLA-viite (9. p.)Protacio, Antonio L. "Drugs That Can Be Taken During Pregnancy. IN Doctor's Corner [column]." Philippine Daily Inquirer, 1997.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.