Many of the legal and news sources you use in the course are online. If you find your cases via Westlaw, NexisUni or HeinOnline, you do not have to add an url in your citation. Westlaw, in particular, does not have a permalink.
See 10.8.1 in The Bluebook: A Uniform System of Citation. Your citations for these sources should include the following elements:
News articles: Author, if any (year). Title. Source title, date if needed, page number. URL
Court case available on electronic media: Case name, case citation (year).
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