@book{205891,
	author = {Collins, Roger, and Wiley InterScience (Online service)},
	title = {Caliphs and kings : Spain, 796-1031 /},
	publisher = {John Wiley & Sons,},
	year = {©2012.},
	address = {Chichester, UK ;},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781118273968}
}