@book{174479,
	author = {Brown, H. Douglas and Blanco Fernández, Edwin,},
	title = {Principles of language learning and teaching},
	publisher = {Prentice-Hall},
	year = {c1987.},
	address = {Englewood Cliffs, N.J.},
	edition = {2nd ed.},
	note = {Includes index.}
}