Não informado. (1952). Problems of Comunism. U.S. Information Agency.
Style de citation Chicago (17e éd.)Não informado. Problems of Comunism. Washington: U.S. Information Agency, 1952.
Style de citation MLA (8e éd.)Não informado. Problems of Comunism. U.S. Information Agency, 1952.
Attention : ces citations peuvent ne pas être correctes à 100%.