Cita APA (7th ed.)
Källén, B. (2009). Drugs during pregnancy. Nova Biomedical Books.
Cita Chicago (17th ed.)
Källén, Bengt. Drugs During Pregnancy. New York: Nova Biomedical Books, 2009.
Cita MLA (9th ed.)
Källén, Bengt. Drugs During Pregnancy. Nova Biomedical Books, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.