CABI: Procyon lotor (raccoon) https://www.cabi.org/isc/datasheet/67856
Förslag till namn på finska (Nisäkäsnimistötoimikunta): Supi
GB non-native species secretariat: Raccoon, Procyon lotor
Global Invasive Species Database: Species profile: Procyon lotor.

Beltrán-Beck, B., García, F. J. & Gortázar, C. 2012. Raccoons in Europe: disease hazards due to the establishment of an invasive species. European Journal of Wildlife Research 58: 5−15.

Hadidian, J., Prange, S., Rosatte, R., Riley, S.P.D. & Gehrt, S.D. 2010. Raccoons (Procyon lotor). In: Gehrt, S.D., Seth, S.P.D. & Cypher, B.L. (eds.), Urban Carnivores. Ecology, conflict, and conservation. Johns Hopkings University Press, Baltimore: pp. 35−47. (ISBN: 978-0-8018-9389-6)

Larivière S. 2004. Range expansion of raccoons in the Canadian prairies: review of hypotheses. Wildlife Society Bulletin 32: 955–963. or at BioOne

Prange, S., Gehrt, S.D. & Wiggers, E.P. 2003. Demographic factors contributing to high raccoon densities in urban landscapes. Journal of Wildlife Management 67: 324−333.

Vos, A., Ortmann, S., Kretzschmar, A.S., Köhnemann, B. & Michler, F. 2012. The raccoon (Procyon lotor) as potential rabies reservoir species in Germany: a risk assessment. Berliner und Münchener Tiärztliche Wochenschrit 125: 228−235. PDF

Winter, M. 2009. Procyon lotor (Linnaeus), raccoon (Procyonidae, Mammalia). Drake, J. A. (ed.), Daisie: Handbook of Alien Species in Europe. Springer, Berlin: 368.

Tvättbjörn (supi) – Procyon lotor