Tolong jelaskan mengenai Galeri dari Perjanjian UKUSA

Hager, Nicky (1996) Secret Power, New Zealand's Role in the International Spy Network; Craig Potton Publishing, Nelson, NZ; ISBN 0-908802-35-8; (ONLINE EDITION)

Richelson, Jeffrey T.; Ball, Desmond (1985). The Ties That Bind: Intelligence Cooperation Between the UKUSA Countries. London: Allen & Unwin. ISBN 0-04-327092-1.

Richelson, Jeffrey T. The United States Intelligence Community, fifth ed. Westview Press, Boulder, Colo.; ISBN 978-0-8133-4362-4; 2008.

Rosen, Philip. The Communications Security Establishment: Canada’s Most Secret Intelligence Agency. Ottawa: Library of Parliament Research Branch, 1993.

Rudner, Martin. Canada's Communications Security Establishment: From the Cold War to Globalization in Intelligence and National Security. Volume 16 Number 1 (Spring 2001). 97–128.

Whitaker, Reginald. Cold War Alchemy: How America, Britain, and Canada Transformed Espionage into Subversion in Intelligence and National Security.