The Canadian Guide to Uniform Legal Citation, 9th ed, a.k.a. the “McGill Guide” now strongly recommends Perma.cc!
“In an effort to prevent link rot (broken links or pages in the future), when you cite to an item found online, you must provide a Permanent or Archived URL after the regular URL in square brackets. A permanent link (also called a Permalink or Archived link) is a URL that is intended to maintain permanence for many years despite the changes to links on a website that may occur in the future. The McGill Guide strongly recommends the Perma.CC system to create permanent links where none is provided by the site you are citing.”
Read more here. The McGill Guide other style guides including The Bluebook: a Uniform System of Legal Citation and the Chicago Manual of Style in recommending Perma.cc for the preservation of URLs in citations.
Do you have a Perma.cc account yet to keep your links from rotting? Sign up here!