Schaum, J. W. (1971). Rhythm & Blues. Bosworth.
Lua i Stíl Chicago (17ú heag.)Schaum, John W. Rhythm & Blues. Köln [u.a.]: Bosworth, 1971.
Lua MLA (8ú heag.)Schaum, John W. Rhythm & Blues. Bosworth, 1971.
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