@book{88067,
	author = {Morgenthau, Hans J. and Thompson, Kenneth W.},
	title = {Politics among nations  the struggle for power and peace},
	publisher = {McGraw-Hill},
	year = {c1993},
	address = {Nueva York (Estados Unidos)},
	url = {http://www.loc.gov/catdir/toc/mh021/92003398.html}
}