@book{181,
	author = {Hatcher A. Robert, Guest Felicia, Stewart Felicia, Stewart K. Gary, Trussell James and Frank Erica},
	title = {Contraceptive Technology 1984-1985},
	publisher = {Irvington Publishers, Inc;},
	year = {1984},
	address = {New York;},
	edition = {12th ed }
}