@book{43596,
	author = {Escudero Trujillo, Rafael and Rojas Álvarez, Carlos},
	title = {Matemáticas básicas},
	publisher = {Ediciones Uninorte, Ediciones de la U},
	year = {2010},
	address = {Colombia :},
	edition = {2},
	note = {Incluye bibliografía},
	url = {http://biblioteca.unac.edu.co/portadas/51045.jpg}
}