@book{210027,
	author = {Madsen, David A. and Madsen, David P.},
	title = {Engineering drawing & design},
	publisher = {Delmar Thomson Learning},
	year = {c2007.},
	series = {Drafting and design series},
	address = {Clifton Park, NY},
	edition = {4th ed.},
	note = {ESTE LIBRO INCLUYE UN DISCO}
}