@book{23863,
	author = {Lamadrid, Enrique E. and Bull, William Emerson,},
	title = {Communicating in Spanish, level one. Instructor's guide :},
	publisher = {Houghton Mifflin,},
	year = {1974.},
	address = {Boston :},
	url = {http://www.archive.org/details/communicatingins00lama}
}