@book{31770,
	author = {Horsager, Robyn},
	title = {Williams obstetrics study guide /},
	publisher = {McGraw-Hill Education Medical,},
	year = {2015},
	address = {New York :},
	edition = {24th ed},
	url = {http://192.168.201.76/multim/m10305/cover10305.jpg}
}