@book{1872,
	author = {Levenson, Albert M and Solon, Babette S},
	title = {Manual de teoría de los precios.},
	publisher = {Amorrortu, },
	year = {1979.},
	address = {Buenos Aires : },
	edition = {1ra.ed.},
	note = {Bibliografía p. 272.}
}