@book{24243,
	author = {O'Keefe, James H. and Hammill, Stephen C.},
	title = {The complete guide to ECGs /},
	publisher = {Physicians' Press,},
	year = {1997.},
	address = {Birmingham, Mich. :},
	note = {"A comprehensive study guide to improve ECG interpretation skills"--Cover.},
	url = {http://www.archive.org/details/completeguidetoe00okee}
}