@book{30757,
	author = {Northrop, Douglas Taylor.},
	title = {A companion to world history /},
	publisher = {Wiley-Blackwell, a John Wiley & Sons, Ltd., Publication},
	year = {2015.},
	series = {Wiley-Blackwell companions to world history},
	address = {Chichester, West Sussex, UK :},
	url = {http://catalogimages.wiley.com/images/db/jimages/9781444334180.jpg}
}