@book{32650,
	author = {Grunebaum, Gustave E. von. [ed.]},
	title = {Unity and variety in Muslim civilization /},
	publisher = {University of Chicago Press,},
	year = {c1955 [Impression 1956, 1963, 1967].},
	series = {Comparative studies of cultures and civilizations;},
	address = {Chicago :}
}