FELTWELL, J. (1993). The Encyclopedia Of Butterflies. Prentice Hall General Referenc.
Lua i Stíl Chicago (17ú heag.)FELTWELL, John. The Encyclopedia Of Butterflies. Prentice Hall General Referenc, 1993.
Lua MLA (8ú heag.)FELTWELL, John. The Encyclopedia Of Butterflies. Prentice Hall General Referenc, 1993.
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