| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Multilevel Networks in European Foreign Policy | Hardcover | 978-1-138-71608-7 | 2017 |
| New Threats and New Actors in International Security | " | 978-1-4039-6697-1 | 2005 |
| States, Citizens and the Privatisation of Security | " | 978-0-521-11019-8 | 2010 |
| States, Citizens and the Privatisation of Security | Paperback | 978-0-521-12519-2 | 2010 |
Cambridge University Press · Palgrave Macmillan · Routledge