@book{129656,
	author = {Ibn Khaldun, and Macdonald, Duncan B.},
	title = {A selection from the Prolegomena of Ibn Khaldun :},
	publisher = {Brill,},
	year = {1969.},
	address = {Leiden :},
	note = {Photoreprint of the 2d. ed. 1948.}
}