Helen Pidd: Andy Burnham elected mayor of Greater Manchester. In: The Guardian. 5. Mai 2017, ISSN0261-3077 (theguardian.com [abgerufen am 23. Mai 2017]).
Helen Pidd: Andy Burnham elected mayor of Greater Manchester. In: The Guardian. 5. Mai 2017, ISSN0261-3077 (theguardian.com [abgerufen am 23. Mai 2017]).