Ewen, D. (1934). Composers of today: A comprehensive biographical and critical guide to modern composers of all nations. Wilson.
Lua i Stíl Chicago (17ú heag.)Ewen, David. Composers of Today: A Comprehensive Biographical and Critical Guide to Modern Composers of All Nations. New York: Wilson, 1934.
Lua MLA (8ú heag.)Ewen, David. Composers of Today: A Comprehensive Biographical and Critical Guide to Modern Composers of All Nations. Wilson, 1934.
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