Cita APA (7a ed.)
Källén, B. (2009). Drugs during pregnancy. Nova Biomedical Books.
Cita Chicago Style (17a ed.)
Källén, Bengt. Drugs During Pregnancy. New York: Nova Biomedical Books, 2009.
Cita MLA (9a ed.)
Källén, Bengt. Drugs During Pregnancy. Nova Biomedical Books, 2009.
Precaución: Estas citas no son 100% exactas.