@book{3987,
	author = {Cosgrove, Mark P.  and Vargas, Carlos Alonso },
	title = {La esencia de la naturaleza humana / },
	publisher = {Caribe, },
	year = {1977},
	address = {Miami : },
	edition = {1 ed.},
	note = {Contiene bibliografía y referencias bibliográficas}
}