Olufsen, O. (1908). Persia Past and Present. A Book af Travel and Research. With more than two Hundred Illustrations and a Map; by A. V. Williams Jackson, Professor af Indo-Iranian Languages etc. New York: The Macmillan Company. London: Macmillan & Go. Ltd. 1906. Oktav, 471 Sider. Geografisk Tidsskrift, 19. Hentet fra https://tidsskrift.dk/geografisktidsskrift/article/view/49401