United States. Government Accountability Office & ProQuest (Firm). (2007). Aviation security: Federal efforts to secure U.S.-bound air cargo are in the early stages and could be strengthened : report to congressional committees. GAO.
Chicago Style (17th ed.) CitationUnited States. Government Accountability Office and ProQuest (Firm). Aviation Security: Federal Efforts to Secure U.S.-bound Air Cargo Are in the Early Stages and Could Be Strengthened : Report to Congressional Committees. Washington, D.C.: GAO, 2007.
MLA (9th ed.) CitationUnited States. Government Accountability Office and ProQuest (Firm). Aviation Security: Federal Efforts to Secure U.S.-bound Air Cargo Are in the Early Stages and Could Be Strengthened : Report to Congressional Committees. GAO, 2007.