@book{18070,
	author = {Chastain, Kenneth},
	title = {The development of modern-language skills},
	publisher = {The Center for Curriculum Development},
	year = {1971},
	series = {Language and the teacher: a series in applied linguistics},
	address = {Philadelphia},
	edition = {1ª ed.},
	note = {Contiene índice temático}
}