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