Dyfyniad APA
Källén, B. (2009). Drugs during pregnancy. Nova Biomedical Books.
Dyfyniad Arddull Chicago
Källén, Bengt. Drugs During Pregnancy. New York: Nova Biomedical Books, 2009.
Dyfyniad MLA
Källén, Bengt. Drugs During Pregnancy. Nova Biomedical Books, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.