@book{12427,
	author = {Greenberg, Marvin Jay},
	title = {Euclidean and non-euclidean geometries; development and history},
	publisher = {W. H. Freeman,},
	year = {1980},
	address = {San Francisco:},
	edition = {2nd},
	note = {"Library also has 3rd. ed. 1993"}
}