Não informado. (1965). Social Sciences and Humanities Index. H. W. Wilson.
Lua i Stíl Chicago (17ú heag.)Não informado. Social Sciences and Humanities Index. New York: H. W. Wilson, 1965.
Lua MLA (8ú heag.)Não informado. Social Sciences and Humanities Index. H. W. Wilson, 1965.
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