@book{4839,
	author = {David, Fred R. and Sánchez Carrión, Miguel Angel},
	title = {Conceptos de administración estratégica},
	publisher = {Pearson Educación},
	year = {2003},
	address = {México :},
	edition = {9a. ed.},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L128089.jpg}
}