R.K. · R.N. · Ryan-N · Ryan Noppen
| title | ISBN-13 | year of publication |
|---|---|---|
| Austro-Hungarian Battleships 1914–18 | 978-1-84908-688-2 | 2012 |
| Austro-Hungarian Cruisers and Destroyers 1914-18 | 978-1-4728-1470-8 | 2016 |
| German Commerce Raiders 191418 | 978-1-4728-0950-6 | 2015 |
| US Navy Dreadnoughts 1914–45 | 978-1-78200-386-1 | 2014 |