@book{7723,
	author = {Haberle, Peter and I. Valadés, Diego, introd.},
	title = {El Estado constitucional},
	publisher = {UNAM},
	series = {UNAM. I.I.J. Serie Doctrina Jurídica;},
	address = {México:},
	note = {Estudio introductorio de Diego Valadés}
}