Pituophis (Swedish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pituophis" in Swedish language version.

refsWebsite

Global rank Swedish rank

1,087^th place

20^th place

2,106^th place

769^th place

1,245^th place

816^th place

catalogueoflife.org

Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (29 september 2011). ”Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.”. Species 2000: Reading, UK. http://www.catalogueoflife.org/annual-checklist/2011/search/all/key/pituophis/match/1. Läst 24 september 2012.

Tennant, Alan (2003). ”Pituophis”. Snakes of North America. aylor Trade Publishing. sid. 367-368