APA (7th ed.) Citation

Library of Congress. Federal Research Division & Solsten, E. (1993). Portugal: A country study. Federal Research Division.

Chicago Style (17th ed.) Citation

Library of Congress. Federal Research Division and Eric Solsten. Portugal: A Country Study. Washington, D.C.: Federal Research Division, 1993.

MLA (9th ed.) Citation

Library of Congress. Federal Research Division and Eric Solsten. Portugal: A Country Study. Federal Research Division, 1993.