Mercedes-Benz in the UK. Stuttgart, 13 June 2007; Daimler Global Media Christoph Ehland, editor, Thinking Northern: Textures of Identity in the North of
ISBN 0-7190-5178-9. (原始内容存档于2012-11-12). Ehland, Christoph. Thinking Northern: Textures of Identity in the North of England. Editions Rodopi BV. 2007 [2015-01-11]