Hansen, T. (2009). Trilobites of the Middle Ordovician Elnes Formation of the Oslo region, Norway. Wiley-Blackwell.
Chicago Style (17th ed.) CitationHansen, Thomas. Trilobites of the Middle Ordovician Elnes Formation of the Oslo Region, Norway. Chichester, Sussex: Wiley-Blackwell, 2009.
MLA (8th ed.) CitationHansen, Thomas. Trilobites of the Middle Ordovician Elnes Formation of the Oslo Region, Norway. Wiley-Blackwell, 2009.
Warning: These citations may not always be 100% accurate.