APA (7th ed.) Citation

Ek, C. W. (1998). NATO expansion: Cost issues. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

Ek, Carl W. NATO Expansion: Cost Issues. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1998.

MLA (9th ed.) Citation

Ek, Carl W. NATO Expansion: Cost Issues. Congressional Research Service, Library of Congress, 1998.

Warning: These citations may not always be 100% accurate.