But still, much of this stuff is on the internet because it could be posted there without being reviewed in the normal manner. Material posted to the internet and used as an information source should be referenced as any published material should. There is as yet no widely agreed on format for including such material in literature cited lists. Online, A Reference Guide to Using Internet Resources . The CBE manual may now be accessed on-line also, and it includes suggestions as well.
Web pages come and go as do print publications.
The organization may stop maintaining the page. No one yet knows what the future of electronic publication will be. Electronic journals are also printed in a limited number of copies for archival purposes, so presumably if computers go away, one will still be able to find the articles. But when a web page is abandoned, it is likely gone forever. Summarize your impressions of web pages as sources for scholarly work, in particular as they compare to journal articles and books.