Rule 18.2 of the Bluebook governs the citation format of information found on the internet. Remember that, as a matter of authority, the Bluebook requires the citation to print sources when available unless there's a digital copy that is authenticated, official or is an exact copy.
Keep in mind the following general principles when citing from the internet:
You may encounter a situation where the link you have to a source does not take you to the page you need to access. In other words, you have what we call a broken link. Fear not! You can head to Internet Archive's Wayback Machine to view saved versions of the page. Just insert your link into the search bar and hit Enter on your keyboard. Select the year, and then browse using the interactive calendar. You can also use the Wayback Machine to browse changes made to a website (e.g. you want to see how a candidate for office has changed their website since the last election).
Perma.cc is a hyperlink preservation tool that addresses the problem of broken hyperlinks in law review article citations. Perma.cc creates permanent, archived versions of webpages with a permalink (i.e. permanent URL). If a page is taken down or the link is otherwise broken, the page can still be accessed using the link created with Perma.cc.
Journal students should contact the Managing Editor for the journal's login credentials.
Create a permalink to archive any free web content that is not published in permanent form (e.g. blogs, press releases, etc.). According to the Terms of Service, you should only archive material that is "freely available on the Internet to the general public without paying, registering with the website, or the like" and "cited in a legal work or in a work of scholarship, reporting, criticism or commentary."
Use Perma.cc's Creating Perma Records and Links guide to learn how to create a Perma link. See Bluebook Rule 18.2.1(d) for how to incorporate a Perma link into a legal citation. For additional questions, see Perma.cc's User Guide, which contains a FAQ page.