@book{2124,
	author = {Briggs, Gerald G. and Freeman, Roger K.},
	title = {Drugs in pregnancy and lactation : },
	publisher = {Wolters Kluwer,},
	year = {2011.},
	address = {Philadelphia :},
	edition = {9th edition.},
	url = {https://books.google.com.pk/books?id=ScPvM03B3lUC&printsec=frontcover&dq=Drugs+in+pregnancy+and+lactation+:a+reference+guide+to+fetal+and+neonatal+risk&hl=en&sa=X&redir_esc=y#v=onepage&q=Drugs%20in%20pregnancy%20and%20lactation%20%3Aa%20reference%20guide%20to%20fetal%20and%20neonatal%20risk&f=false}
}