Protacio, A. L. (1997). Drugs that can be taken during pregnancy. IN Doctor's corner [column]. Philippine Daily Inquirer.
Čikaški stil citiranja (17. izdanje)Protacio, Antonio L. "Drugs That Can Be Taken During Pregnancy. IN Doctor's Corner [column]." Philippine Daily Inquirer 1997.
MLA način citiranja (9. izdanje)Protacio, Antonio L. "Drugs That Can Be Taken During Pregnancy. IN Doctor's Corner [column]." Philippine Daily Inquirer, 1997.
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