APA (7th ed.) Citation

Doyle, C. (2009). National security letters: Proposed amendments in the 111th Congress. Congressional Research Service.

Chicago Style (17th ed.) Citation

Doyle, Charles. National Security Letters: Proposed Amendments in the 111th Congress. [Washington, District of Columbia]: Congressional Research Service, 2009.

MLA (9th ed.) Citation

Doyle, Charles. National Security Letters: Proposed Amendments in the 111th Congress. Congressional Research Service, 2009.