@book{12763,
	author = {Hutchinson, Tom, and Waters, Alan.},
	title = {English for specific purposes :},
	publisher = {Cambridge University Press,},
	year = {c1987 [25th printing 2010]},
	series = {New directions in language teaching.},
	address = {Cambridge [Cambridgeshire] :},
	note = {Includes index.}
}