Staff. "The Western Front". The Observer. Vol. 248 No. 7, 737. London. p. 9, col. 3. Archived from the original on 24 January 2020. Retrieved 24 January 2017.
Staff. "The Western Front". The Observer. Vol. 248 No. 7, 737. London. p. 9, col. 3. Archived from the original on 24 January 2020. Retrieved 24 January 2017.