@book{120,
	author = {Bentley, Jerry H., and Ziegler, Herbert F.,},
	title = {Traditions & encounters : a global perspective on the past : vol. A : from the beginning to 1000 /},
	publisher = {McGraw-Hill,},
	year = {c2006.},
	address = {Boston :},
	edition = {3rd ed.}
}