@book{2875,
	author = {Day, George S. and Aaker, David A.},
	title = {Investigación de mercados},
	publisher = {McGraw-Hill},
	year = {1989},
	address = {México :},
	edition = {3a. ed},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/L53103.jpg}
}