Citing Stanford Encyclopedia of Philosophy

While articles on SEP are good introductions and published by philosophers in the field, it is generally looked down upon to cite SEP. It shows a lack of dedication to go deeper into your sources. Many of the articles are only condensed versions of  the author' book or published work, in which case, find the original text and what you want to cite in that.  In undergraduate papers many young professors who are internet savvy will let you cite it. If you choose to do this SEP suggests the following:

To make the citation process easier, each entry has a "Cite this entry" link at the top of the left panel. This takes you to a page with specific citation information for that entry. For example, the citation information page for Jeff Malpas' entry on Donald Davidson will show you a citation of the following form:

Malpas, J., "Donald Davidson", The Stanford Encyclopedia of Philosophy (Winter 2003 Edition), Edward N. Zalta (ed.), URL = <http://plato.stanford.edu/archives/win2003/entries/davidson/>.

http://plato.stanford.edu/cite.html