Não informado. (1971). PAIS Foreign Language Index. Public Affairs Information Service.
Chicago Style (17th ed.) CitationNão informado. PAIS Foreign Language Index. New York: Public Affairs Information Service, 1971.
MLA (8th ed.) CitationNão informado. PAIS Foreign Language Index. Public Affairs Information Service, 1971.
Warning: These citations may not always be 100% accurate.