@book{75605,
	author = {Marx, Karl. and Hobsbawm, Eric J.},
	title = {Formaciones económicas precapitalistas},
	publisher = {Siglo XXI,},
	year = {1986.},
	series = {Cuadernos de pasado y presente},
	address = {México, D.F. :},
	edition = {13 ed.}
}