| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Department of Homeland Security appropriations for 2009: hearings before a subcommittee of the Committee on Appropriations, House of Representatives, One Hundred Tenth Congress, second session | 978-0-16-081314-6 (0-16-081314-X) | 2008 |
| Department of Homeland Security appropriations for 2009: hearings before a subcommittee of the Committee on Appropriations, House of Representatives, One Hundred Tenth Congress, second session | 978-0-16-081397-9 (0-16-081397-2) | 2008 |