APA
Briggs G. G., Freeman R. K., . (1998). Drugs in pregnancy & lactation - a reference guide to Fetal & Neonatal risk. Philadelphia, PA: Lippincott Williams & Wilkins.
Chicago
Briggs Gerald G, Freeman Roger K, . 1998. Drugs in pregnancy & lactation - a reference guide to Fetal & Neonatal risk. Philadelphia, PA: Lippincott Williams & Wilkins.
Harvard
Briggs G. G., Freeman R. K., . (1998). Drugs in pregnancy & lactation - a reference guide to Fetal & Neonatal risk. Philadelphia, PA: Lippincott Williams & Wilkins.
MLA
Briggs Gerald G, Freeman Roger K, . Drugs in pregnancy & lactation - a reference guide to Fetal & Neonatal risk. Philadelphia, PA: Lippincott Williams & Wilkins. 1998.