Military Technology: Top Secret Clearance: Warplanes of World War II Up Close
Campaigning for President in America, 1788-2016
The Roots and Consequences of 20th-Century Warfare: Conflicts That Shaped the Modern World
Encyclopedia of Historical Warrior Peoples & Modern Fighting Groups
The Gun Debate: An Encyclopedia of Gun Rights & Gun Control in the United States
Homeland Security Technologies for the 21st Century
Military Technology: Top Secret Clearance: Military Jets Up Close
Presidential Power: Documents Decoded
Military Technology: Top Secret Clearance: Small Arms Up Close
Military Technology: Top Secret Clearance: Tanks of World War II Up Close
Military Technology: Top Secret Clearance: Modern Warships Up Close
Diplomacy and the Making of World Politics
Cyber Warfare: A Reference Handbook
Illegal Immigration: A Reference Handbook
9/11 and the War on Terror: A Documentary and Reference Guide
When Should State Secrets Stay Secret?: Accountability, Democratic Governance, and Intelligence
Border Disputes: A Global Encyclopedia
Government and the Economy: An Encyclopedia