@book{9033,
	author = {Christy, Dennis T., and Christy, Dennis T.,},
	title = {Algebra and trigonometry /},
	publisher = {Wm. C. Brown,},
	year = {c1989.},
	address = {Dubuque, Iowa :},
	edition = {4th ed.},
	note = {Rev. ed. of: Essentials of precalculus mathematics. 3rd ed. c1986.}
}