@book{3092,
	author = {Speroff, Leon.},
	title = {Clinical gynecologic endocrinology and infertility},
	publisher = {LWW,},
	year = {1999.},
	address = {Philadelphia :},
	edition = {6th ed.},
	url = {https://books.google.com.pk/books?id=yORsAAAAMAAJ&q=0683303791&dq=0683303791&hl=en&sa=X&redir_esc=y}
}