Campbell, p. 13. Campbell, N. J. M. (1977). Preston, Antony (ed.). "German Dreadnoughts and Their Protection". Warship. I (4). London: Conway Maritime Press: 12–20. ISSN0142-6222.
Campbell, p. 14. Campbell, N. J. M. (1977). Preston, Antony (ed.). "German Dreadnoughts and Their Protection". Warship. I (4). London: Conway Maritime Press: 12–20. ISSN0142-6222.
Campbell, pp. 13–14. Campbell, N. J. M. (1977). Preston, Antony (ed.). "German Dreadnoughts and Their Protection". Warship. I (4). London: Conway Maritime Press: 12–20. ISSN0142-6222.
Campbell, p. 34. Campbell, N. J. M. (1977). Preston, Antony (ed.). "German Dreadnoughts and Their Protection". Warship. I (4). London: Conway Maritime Press: 12–20. ISSN0142-6222.
Campbell, pp. 101, 254, 257. Campbell, N. J. M. (1977). Preston, Antony (ed.). "German Dreadnoughts and Their Protection". Warship. I (4). London: Conway Maritime Press: 12–20. ISSN0142-6222.