Original sentence: Ces Mowthorpe, Battlebags: British Airships of the First World War, 1995 ISBN 0-905778-13-8.Morpurgo, Barnes Wallis - A Biography, Longman , 1972 ISBN 0-582-10360-6
Edited sentence: Armstrong Whitworth Aircraft since 1913.Barnes Wallis - A Biography, Longman , 1972 ISBN 0-582-10360-6.Battlebags: British Airships of the First World War, 1995 ISBN 0-905778-13-8.ISBN 0 85177 826 7.London:Putnam, 1988.Morpurgo, J.Mowthorpe, Ces.Tapper, Oliver