@book{40219,
	author = {Wallerstein, Immanuel Maurice, and Resines, Antonio,},
	title = {El moderno sistema mundial /},
	publisher = {Siglo Veintiuno,},
	year = {2010.},
	series = {Biblioteca Ulpiano Ayala},
	address = {Madrid :},
	edition = {2a. ed.},
	note = {La biblioteca posee el v. 1 y 2}
}