@book{228950,
	author = {Murray E. Spiegel},
	title = {Algebra superior (Serie Schaum's), 3rd Edition},
	publisher = {McGraw-Hill Interamericana,},
	year = {2007},
	address = {Mexico :},
	edition = {third edition},
	url = {https://resolver.vitalsource.com/9786071501783}
}