Cita APA

United States. Department of State. (1961). Berlin 1961: The background : a document. United States Information Service.

Citación estilo Chicago

United States. Department of State. Berlin 1961: The Background : A Document. London: United States Information Service, 1961.

Cita MLA

United States. Department of State. Berlin 1961: The Background : A Document. United States Information Service, 1961.