Ewen, D. (1952). The complete book of 20th century music. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Ewen, David. The Complete Book of 20th Century Music. New York: Prentice-Hall, 1952.
Lua MLA (9ú heag.)Ewen, David. The Complete Book of 20th Century Music. Prentice-Hall, 1952.
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