@book{127405,
	author = {Hestenes, Marshall D. and Hill, Richard O.},
	title = {Algebra and trigonometry /},
	publisher = {Prentice-Hall,},
	year = {c1986.},
	address = {Englewood Cliffs, N.J. :},
	edition = {2nd ed.},
	note = {Includes index.}
}