Dewey, M. (1971). Abridged Dewey decimal classification and relative index. Forest Press.
Lua i Stíl Chicago (17ú heag.)Dewey, Melvil. Abridged Dewey Decimal Classification and Relative Index. New York: Forest Press, 1971.
Lua MLA (9ú heag.)Dewey, Melvil. Abridged Dewey Decimal Classification and Relative Index. Forest Press, 1971.
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