@book{992,
	author = {Sakala,Elmar P.},
	title = {Obstetrics and Gynecology},
	publisher = {Lippincott Williams & Wilkins,},
	year = {2000.},
	address = {Philadelphia:},
	edition = {2nd ed.},
	url = {http://www.textbookrush.com/browse/books/9780683307436}
}