@book{151896,
	author = {Trager, Edith Crowell. and Henderson, Sara Cook.},
	title = {Pronunciation drills for learners of English},
	publisher = {Prentice-Hall, Inc.},
	year = {1983},
	address = {Englewood Cliffs, New Jersey},
	edition = {2. ed.},
	note = {Cover title : The PD's: pronunciation drills for learners of English.}
}