University of London. Institute of Obstetrics and Gynaecology & Hawkins, D. F. (1987). Drugs and pregnancy: Human teratogenesis and related problems (2nd ed.). Churchill Livingstone.
Čikaški stil citiranja (17. izdanje)University of London. Institute of Obstetrics and Gynaecology i Denis Frank Hawkins. Drugs and Pregnancy: Human Teratogenesis and Related Problems. 2nd ed. Edinburgh: Churchill Livingstone, 1987.
MLA način citiranja (9. izdanje)University of London. Institute of Obstetrics and Gynaecology i Denis Frank Hawkins. Drugs and Pregnancy: Human Teratogenesis and Related Problems. 2nd ed. Churchill Livingstone, 1987.
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