@book{45806,
	author = {Sobel, Max A. and Lerner, Norbert.},
	title = {Algebra and trigonometry /},
	publisher = {Prentice Hall },
	year = {c1991.},
	address = {Englewood Cliffs, NJ },
	edition = {4th ed.},
	note = {Includes index.}
}