@book{172008,
	author = {Singer, Ferdinand L. and Gutiérrez Vázquez, Ángel, tr.},
	title = {Resistencia de materiales  /},
	publisher = { Harla,},
	year = {1982},
	address = {México  :},
	edition = {3a ed.},
	note = {Titulo original: Strength of materials}
}