The University of Canberra advises students to cite items from newsgroups
thus:
Author's last name, first name. (Date). Subject of message. [Online
posting] USENET newsgroup and address (Date of access)
For example, this posting would be cited as:
Ewing, Tricia. (1996,19 September). How to cite bionet.immunology.
[Online posting] USENET newsgroup bionet.immunology (20 September 1996)
The UC's "Library Guide on Citation Style for Internet Resources" also
specifies how to cite various other items from the Net. Some other useful
guides are available. Try:
http://www.lib.berkeley.edu/TeachingLibGuides/Internet/MLAStyleSheet.htmlhttp://www.cc.emory/WHSCL/citation.formats.htmlhttp://www.uvm.edu.~xli/references/estyles.htmlhttp://www.cas.usf.edu/english/walker/mla.html
Hope this helps.
Tricia Ewing
Faculty of Applied Science
University of Canberra