APA (7th ed.) Citation

Roberts, B. (1982). The countries of Central America: A primer. Library of Congress, Congressional Research Service.

Chicago Style (17th ed.) Citation

Roberts, Brad. The Countries of Central America: A Primer. [Washington, DC]: Library of Congress, Congressional Research Service, 1982.

MLA (9th ed.) Citation

Roberts, Brad. The Countries of Central America: A Primer. Library of Congress, Congressional Research Service, 1982.