APA (7th ed.) Citation

Collier, E. C. (1993). Foreign policy roles of the President and the Congress. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

Collier, Ellen C. Foreign Policy Roles of the President and the Congress. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1993.

MLA (9th ed.) Citation

Collier, Ellen C. Foreign Policy Roles of the President and the Congress. Congressional Research Service, Library of Congress, 1993.