APA aipamena

Heritage of Freedom: A Brief History of The United States. Washington, D.C.: United States Information Agency.

Chicago Style aipamena

Heritage of Freedom: A Brief History of The United States. Washington, D.C.: United States Information Agency.

MLA aipamena

Heritage of Freedom: A Brief History of The United States. Washington, D.C.: United States Information Agency.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.