Williams, M., & Siveter, D. (2008). The earliest leperditicope arthropod: A new genus from the Ordovician of Spitsbergen.
Lua i Stíl Chicago (17ú heag.)Williams, M., agus D. Siveter. The Earliest Leperditicope Arthropod: A New Genus from the Ordovician of Spitsbergen. 2008.
Lua MLA (9ú heag.)Williams, M., agus D. Siveter. The Earliest Leperditicope Arthropod: A New Genus from the Ordovician of Spitsbergen. 2008.
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