@book{7044,
	author = {Coburn, John W. and Herdlick, John D.},
	title = {Trigonometry /},
	publisher = {McGraw-Hill,},
	year = {c2011.},
	series = {The Coburn/Herdlick trigonometry series},
	address = {Dubuque, IA :},
	edition = {2nd ed.},
	note = {Includes index.}
}