@book{36672,
	author = {Sills, David L.},
	title = {Enciclopedia internacional de las ciencias sociales},
	publisher = {Aguilar},
	year = {1976-},
	address = {Madrid},
	edition = {Éd. española.},
	note = {Original ed. published by Macmillan under the title: International encyclopedia of the social sciences, New York, 1968.}
}