The enlargement of NATO :
why adding Poland, Hungary, and the Czech Republic to NATO strengthens American national security.

APA Citation

United States. Dept. of State. (1998). The enlargement of NATO: why adding Poland, Hungary, and the Czech Republic to NATO strengthens American national security. Washington, DC: U.S. Dept. of State.

MLA Citation

United States. Dept. of State. The Enlargement of NATO: Why Adding Poland, Hungary, And the Czech Republic to NATO Strengthens American National Security. Washington, DC: U.S. Dept. of State, 1998.

Warning: These citations may not always be complete (especially for serials).