Barnes, R. D. (1974). Invertebrate Zoology. W.B Saunder.
Lua i Stíl Chicago (17ú heag.)Barnes, Robert D. Invertebrate Zoology. W.B Saunder, 1974.
Lua MLA (8ú heag.)Barnes, Robert D. Invertebrate Zoology. W.B Saunder, 1974.
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