| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| CCNP Security SIMOS 300-209 Official Cert Guide | 978-1-58714-428-8 | 2015 | Natalie Timms |
| CCNP Security VPN 642-647 Official Cert Guide | 978-1-58714-256-7 | 2011 | |
| Ccnp Security Vpn 642-648 Offical Cert G | 978-93-325-0218-5 | 2013 | |
| CCNP Security VPN 642-648 Official Cert Guide | 978-1-58720-447-0 | 2012 | |