Gaya APA

Hey, E. (2003). Drugs in Pregnancy and the First Year of Life - A Pharmacopoeia : Neonatal Formulary 4 . : BMJ Publishing.

Gaya MLA

Hey, Edmund. "Drugs in Pregnancy and the First Year of Life - A Pharmacopoeia : Neonatal Formulary 4". : BMJ Publishing, 2003. Text.