@book{204,
	author = {Sobel, Max. and Lerner, Norbert.},
	title = {Algebra and trigonometry /},
	publisher = {Prentice-Hall, Inc.,},
	year = {1995.},
	address = {Englewood Cliffs, NJ :},
	edition = {5th edn.},
	note = {Includes index.}
}