Marcella, R., & Maltby, A. (2000). The Future of classification. Gower.
Lua i Stíl Chicago (17ú heag.)Marcella, Rita, agus Arthur Maltby. The Future of Classification. Aldershot, Hants, Eng: Gower, 2000.
Lua MLA (9ú heag.)Marcella, Rita, agus Arthur Maltby. The Future of Classification. Gower, 2000.
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